Latest security news
Sat, October 24Yesterday
chi: Client IP spoofing in ClientIPFromXFF via X-Forwarded-For
影響: go:github.com/go-chi/chi/v5 <= 5.3.2 → 5.4.0 ClientIPFromXFF skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CIDR. A client that can reach the Go server directly can therefore append a trusted-looking proxy address and choose the client IP returned by middleware.GetClientIP. The attack is remote and requires one unauthenticated HTTP request with no user interaction (AV:N/AC:L/PR:N/UI:N). It changes security decisions and exposes one protect…
Echo: X-Real-IP extractor trusts the header value instead of the sending peer
影響: go:github.com/labstack/echo/v5 >= 5.0.0, < 5.4.1 → 5.4.1 In Echo v5, ExtractIPFromRealIPHeader checked whether the address supplied in X-Real-IP belonged to a trusted range instead of checking the address of the direct network peer. An untrusted client could therefore supply a loopback or private address and have it returned by c.RealIP() with the extractor's default trust options. Applications using this extractor for IP allowlists, IP-based rate limiting, audit logs or forwarding headers could accept a spoofed client identity. Exploitation requires…
Echo: WebSocket proxy can retain connections and handlers after client disconnect
影響: go:github.com/labstack/echo/v4 >= 4.15.0, < 4.16.1 → 4.16.1, go:github.com/labstack/echo/v5 >= 5.0.0, < 5.4.1 → 5.4.1 Echo's Proxy middleware could retain a handler, copy goroutines and network connections after a WebSocket client disconnected if the upstream kept its connection open. The raw proxy waited for both copy directions to finish without reliably closing the other connection when one direction ended. Rejected upgrade responses with HTTP keep-alive were one way to trigger this behavior. Repeated connections can accumulate resources and cause denial of service. The impact depends on the proxy route's a…
Echo: Decompress permits unbounded gzip expansion in v4
影響: go:github.com/labstack/echo/v4 >= 4.0.0, < 4.16.1 → 4.16.1 Echo v4's opt-in Decompress middleware exposed a gzip-decoded request stream without limiting its expanded size. A small compressed request could therefore produce a very large decoded body. Handlers that read or bind that body could consume excessive memory or CPU, and repeated or concurrent requests could cause denial of service. The middleware is not enabled by default. A limit on the compressed request size alone does not bound the decompressed size. Applications that already apply an effec…
Echo: Rejected WebSocket upgrades can bypass Echo route-level access controls
影響: go:github.com/labstack/echo/v4 >= 4.0.0, < 4.16.1 → 4.16.1, go:github.com/labstack/echo/v5 >= 5.0.0, < 5.4.1 → 5.4.1 Echo's Proxy middleware selected a raw tunnel when the client requested a WebSocket upgrade, before validating whether the configured upstream accepted it. If the upstream returned an ordinary HTTP response and kept the connection alive, subsequent HTTP requests on that connection were forwarded directly to the same upstream without passing through Echo's router or route-specific middleware. This can bypass authentication or authorization enforced only at Echo's routes. Exploitation requires an…
Echo: BodyDump can discard BodyLimit overflow errors for unknown-length requests
影響: go:github.com/labstack/echo/v5 >= 5.0.0, < 5.4.1 → 5.4.1 Echo v5's BodyDump middleware captured a bounded prefix, drained the remaining request body while ignoring read errors, and then replaced the body with the captured prefix. With an outer BodyLimit, an unknown-length request such as an HTTP/1.1 chunked request, and a BodyDump capture limit below the BodyLimit threshold, an overflow detected during that drain could be discarded. The handler could consequently process a truncated request and return success even though the original body exceeded th…
Echo: BodyDump captures request and response bodies without size limits in v4
影響: go:github.com/labstack/echo/v4 >= 4.0.0, < 4.16.1 → 4.16.1 Echo v4's opt-in BodyDump middleware read complete request bodies into memory and retained complete response bodies without a capture limit. A client able to submit large requests to a route using BodyDump could cause large allocations before the application handler ran. Large responses, including responses whose size can be influenced by a client, also caused an additional unbounded capture allocation. Repeated or concurrent requests can exhaust process memory and cause denial of service. Body…
SiYuan: Missing consistency check between packageName and repoURL/repoHash in bazaar package install allows overwriting an existing, trusted plugin
影響: go:github.com/siyuan-note/siyuan/kernel < 0.0.0-20260808010544-26ccb40d390e → 0.0.0-20260808010544-26ccb40d390e installBazaarPlugin (and the equivalent endpoints for widgets/icons/templates/themes) accept packageName, repoURL, and repoHash as independent request fields with no validation that they refer to the same package. packageName alone determines the install destination; repoURL/repoHash alone determine what content gets downloaded and written there. A request can name an already-installed, already-enabled plugin as packageName while pointing repoURL/ repoHash at different, attacker-influenced cont…
SiYuan: A parser differential between the WebSocket keepalive exemption and the session quarantine allows unauthenticated access to the broadcast event stream
影響: go:github.com/siyuan-note/siyuan/kernel < 0.0.0-20260731131820-67bc300b6ea6 → 0.0.0-20260731131820-67bc300b6ea6 Two checks on the same WebSocket request URI parse it differently. The authentication exemption for keepalive sessions matches raw substrings, while the quarantine introduced to contain those sessions reads a parsed query parameter. Because Go's url.Values.Get returns only the first value for a repeated key, a single URI can satisfy the exemption and still resolve to a non-auth session identity. The result is that an unauthenticated remote caller connects to the kernel WebSocket with a valid ac…
SiYuan: authFilePublishAccess distinguishes hidden and forbidden documents from public and nonexistent ones, and issues a publish-auth cookie for documents it reports as forbidden
影響: go:github.com/siyuan-note/siyuan/kernel < 0.0.0-20260731093152-c7522b8db586 → 0.0.0-20260731093152-c7522b8db586 /api/filetree/authFilePublishAccess is registered with CheckAuth only and is reachable anonymously. It never sets a failure code, so its outcome is signalled entirely by the response message and by whether a Set-Cookie header is present. Those two signals differ across access tiers, which lets an anonymous caller determine, for any candidate document identifier, whether that document is public or nonexistent, password-protected, or exists at the hidden or forbidden tier. Separately, hidden and…
SiYuan: The publish filter for database backlinks consults the forbidden list instead of the visibility list, disclosing hidden-tier documents to anonymous readers
影響: go:github.com/siyuan-note/siyuan/kernel < 0.0.0-20260730150429-5b42614311b0 → 0.0.0-20260730150429-5b42614311b0 /api/av/getAttributeViewBacklinks filters its results for reader roles through FilterAttributeViewBacklinksByPublishAccess. That function resolves its ignore list with GetDisablePublishAccess, which covers only the forbidden tier. Documents at the hidden tier are absent from that list, so they pass the check. The result is that an anonymous reader supplying a publicly visible database row receives the database name, row title and document path of rows in hidden documents that reference it. The…
SiYuan: The publish filter for local storage returns the administrator's entire storage map with only three keys sanitized
影響: go:github.com/siyuan-note/siyuan/kernel < 0.0.0-20260729005258-4daee87d4152 → 0.0.0-20260729005258-4daee87d4152 Relationship to GHSA-hgfg-j9pg-43xw That advisory concerned the administrator's live UI layout, and commit 63c7d5474 resolved it by removing FilterUILayoutByPublishIgnore and nulling Conf.UILayout for readers. That fix is correct and complete for the live layout. This report concerns a different endpoint, a different filter function and a different storage backing. /api/storage/getLocalStorage reads data/storage/local.json rather than Conf.UILayout, and its filter FilterLocalStorageByPublishAcc…
Thu, October 22
OpenChoreo: Authorization bypass on WorkflowRun update allows cross-project takeover of workflow runs
影響: go:github.com/openchoreo/openchoreo >= 1.0.0, < 1.0.6 → 1.0.6, go:github.com/openchoreo/openchoreo >= 1.1.0, < 1.1.7 → 1.1.7, go:github.com/openchoreo/openchoreo >= 1.2.0, < 1.2.5 → 1.2.5 The OpenChoreo API server authorized PUT .../workflowruns/{runName} against ownership metadata taken from the request body, while the object it actually mutated was selected by the URL path. Nothing forced the two to agree. A WorkflowRun's membership in a project and component is carried entirely by its openchoreo.dev/project and openchoreo.dev/component labels. Because the workflowrun:update check read those labels from the submitted object rather than the stored one, a caller holding…
Moov signedxml: Unauthenticated denial of service in exclusive XML canonicalization
影響: go:github.com/moov-io/signedxml <= 1.4.0 → 1.4.1 Exclusive XML canonicalization (http://www.w3.org/2001/10/xml-exc-c14n#) in github.com/moov-io/signedxml copied the entire accumulated namespace map at every node during ValidateReferences(), before any reference digest or signature check. For a chain of nested elements that each declare many unused namespace prefixes, that produced O(m × depth²) time and peak memory (m = prefixes per level). beevik/etree caps tree depth (~1024), but m is unbounded, so a small attacker-controlled document (on t…
Tue, October 20
Compress/s2: Integer Overflow or Wraparound and Out-of-bounds Write in compress
影響: go:github.com/klauspost/compress <= 1.18.6 → 1.18.7 Signed Integer Overflow in s2.NewDict Summary A signed integer overflow vulnerability in s2.NewDict() allows an attacker to bypass repeat index validation by supplying a dictionary with a uvarint-encoded repeat value exceeding MaxInt64. When Dict.Encode() is subsequently called, the overflowed negative repeat value causes an out-of-bounds memory access via unsafe.Pointer arithmetic, crashing the process with SIGSEGV. Package - Name: github.com/klauspost/compress/s2 - Ecosystem: Go - Affected ve…
Go Issues Emergency Update Blocking Eight CA Keys Over Undisclosed Security Concerns
Go 1.27.3 and Go 1.26.10, released on October 20, make Go's certificate verifier reject any certificate chain that passes through one of eight intermediate certificate authority keys. Programs built on the new release will refuse connections to sites and services whose certificates were issued under those keys. The Go team says the keys belong to one certificate authority it has not
agent-router: MCP session resume does not verify the embedded anti-hijacking subject; default Helm seed makes session IDs forgeable
影響: go:github.com/envoyproxy/ai-gateway >= 0.4.0-rc1, < 1.2.0-rc1 → 1.2.0-rc1 The MCP proxy's client-facing session ID embeds the authenticated caller's subject (JWT sub claim) specifically as an anti-hijacking discriminator — matching the Model Context Protocol specification's documented session-hijacking guidance (https://modelcontextprotocol.io/specification/2025-06-18/basic/security_best_practices#session-hijacking). However, the session-resume path never checks that discriminator against the current caller's identity, so any client that obtains a session ID…
Sat, October 17
Arcane: Delegated users:update permission allows admin account takeover via password reset (no privilege-hierarchy check)
影響: go:github.com/getarcaneapp/arcane/backend/v2 < 2.6.0 → 2.6.0 A user holding the delegated users:update permission can reset the global administrator's password and take over the admin account. UpdateUser sets the target user's PasswordHash from the request body for ANY target with no comparison of caller-vs-target privilege. Because role assignment and role CRUD are deliberately gated by RequireGlobalAdmin, users:update is intended to sit BELOW admin (profile management); this finding defeats that separation. Root Cause UpdateUser (handler backen…
Arcane: Environment access token bypasses the admin-required authorization gate on `/api/debug/pprof`
影響: go:github.com/getarcaneapp/arcane/backend/v2 < 2.11.0 → 2.11.0 Arcane v2.10.2 contains an authorization inconsistency in AuthMiddleware.managerAuth. When a request supplies a valid environment access token through the X-Arcane-Agent-Token header, managerAuth resolves the associated environment, installs an environment-scoped permission set, and immediately calls next(c). This occurs before the middleware evaluates the AdminRequired option and verifies that the caller is a global administrator. As a result, an environment-scoped access token can acc…
kin-openapi openapi3filter: nil-pointer panic in ValidateResponse on a response header declared with content
影響: go:github.com/getkin/kin-openapi <= 0.145.0 → 0.146.0 ValidateResponse panics on a nil pointer when a spec declares a response header with content instead of schema. doc.Validate() accepts that document, so the crash comes from a spec the library just called valid. Same class as GHSA-jpcw-4wr7-c3vq, which covered the request-parameter case in v0.144.0; this is the response-header path. Affects github.com/getkin/kin-openapi 0 { Two things I checked rather than assumed. The response does not need to carry the header; declaring it is enough,…
gomarkdown/markdown IsSafeURL panics on short URLs
影響: go:github.com/gomarkdown/markdown < 0.0.0-20260724235538-61af6e1e6971 → 0.0.0-20260724235538-61af6e1e6971 IsSafeURL slices url[:nPath] before checking that len(url) >= nPath, so a URL shorter than a path prefix (0, 1 or 2 bytes) triggers a slice-bounds panic, and this is reached end to end when the html.Safelink hardening flag is enabled and the input contains an empty or very short link destination, giving an unrecoverable crash DoS. Confirmed at HEAD (e08cff8; present since 2022). The defect parser/parser.go, IsSafeURL: go func IsSafeURL(url []byte) bool { nLink := len(url) for _, path :=…
Fri, October 16
Podman: The `podman run` command can be instructed to disable almost all sandboxing by image annotation
影響: go:github.com/containers/podman >= 4.4.0, < 5.8.8 → 5.8.8, go:go.podman.io/podman/v6 >= 6.0.0, < 6.1.3 → 6.1.3 Podman v4.4.0 added a feature where container checkpoints (from the podman container checkpoint command) could be distributed via OCI registry, and pulled from that registry and run via the podman run command. This allowed easy transfer of checkpoints between systems. However, checkpoints allow complete control of how the container is created - including full control of the container sandbox. When podman run detects a checkpoint, it will silently ignore all user input regarding how the c…
SFTPGo source-side file-pattern filter bypass during copy operations
影響: go:github.com/drakkan/sftpgo/v2 >= 2.5.0, <= 2.7.5 → 2.7.6 File pattern filters (denied_patterns / allowed_patterns) were evaluated on the destination of a copy only. A user holding the copy permission could copy a file denied by the filters to a permitted name and then read it. A recursive directory copy reproduced the contents of a restricted directory under a path where the filters do not deny them, and the hide policy was affected in the same way: a file reported as missing by stat and by directory listings could still be copied. Details An…
containerd: Unpack DoS via repeated opaque whiteouts
影響: go:github.com/containerd/containerd/v2 < 2.0.12 → 2.0.12, go:github.com/containerd/containerd < 1.7.35 → 1.7.35, go:github.com/containerd/containerd/v2 >= 2.2.0, < 2.2.8 → 2.2.8, go:github.com/containerd/containerd/v2 >= 2.3.0, < 2.3.5 → 2.3.5 A vulnerability exists in containerd's layer unpack handler where the processing of certain image layers causes superlinear time complexity. During the unpack operation, specific file configurations within the layer can trigger repeated directory traversals. Consequently, pulling or importing a maliciously crafted image can result in increased unpack times and a moderate increase in CPU usage. This delays container startup, even if the compressed image layers are small. Additionally, in…
Distribution: Client `manifests.Get()` does not verify returned content against requested digest
影響: go:github.com/docker/distribution <= 2.8.3, go:github.com/distribution/distribution/v3 < 3.1.2 → 3.1.2 registry/client.(manifests).Get(ctx, dgst, …) fetches a manifest by digest but never hashes the returned body and compares it against the requested digest. A malicious or compromised registry, or any MITM on the registry connection, can serve arbitrary manifest bytes in response to a digest-pinned request and the client returns the substituted content transparently to the caller. Any application relying on digest pinning for supply-chain integrity — image policy controllers, mirrors, pu…
containerd CRI plugin: Checkpoint restore bypasses destination security context
影響: go:github.com/containerd/containerd/v2 >= 2.1.0, < 2.2.7 → 2.2.7, go:github.com/containerd/containerd/v2 >= 2.3.0, < 2.3.4 → 2.3.4 A vulnerability in containerd's CRI implementation allows a container restored from an untrusted checkpoint via the CreateContainer API to bypass the destination security context and execute with elevated privileges. When restoring a container from a checkpoint archive or annotated OCI image, CRIU restores process credentials, Linux capabilities, no_new_privs, and seccomp state directly from checkpoint data rather than enforcing the destination CRI ContainerConfig. An attacker who can ru…
kin-openapi: Incomplete Fix for GHSA-p6wj-qrr4-pgh5: Three Unpatched nil-Items Panic Paths in openapi3filter
影響: go:github.com/getkin/kin-openapi >= 0.136.0, < 0.149.0 → 0.149.0 The fix for GHSA-p6wj-qrr4-pgh5 addressed a nil-pointer dereference that occurs when an OpenAPI 3.1 array schema omits the items keyword (which is legal under JSON Schema 2020-12). That fix patched three decoder paths: the standalone parseArray function, the top-level array check in UrlencodedBodyDecoder, and MultipartBodyDecoder. Three additional crash paths were missed. All of them reach the unguarded urlValuesDecoder.parseArray method (openapi3filter/req_resp_decoder.go:576) or the u…