undici vulnerable to Subresource Integrity bypass via non-lowercase algorithm tokens

影響: npm:undici >= 7.15.0, < 7.30.1 → 7.30.1, npm:undici >= 8.0.0, < 8.12.2 → 8.12.2

undici's fetch() verifies Subresource Integrity (SRI) metadata by looking up the algorithm token in a lowercase-only set, but the SRI specification defines a valid token by its ASCII-lowercase form. A correct but non-lowercase token such as SHA256-... or Sha256-... is therefore treated as unknown and skipped. When no recognized algorithm remains, undici treats the integrity list as empty and accepts the response, so a server that returns a body different from the pinned digest passes the check.…

在 GitHub Advisory Database 阅读

2026/10/24 07:12，GitHub Advisory Database 发布了“undici vulnerable to Subresource Integrity bypass via non-lowercase algorithm tokens”（类型：漏洞公告）。严重程度为“中危”（medium）。相关技术：JavaScript / Node.js。CVE：CVE-2026-109841。