{"id":"ghsa-ghsa-fc9g-5qg7-mf45","seq":57220,"kind":"advisory","title":"Pillow: Quadratic GIF comment copying during save","url":"https://github.com/advisories/GHSA-fc9g-5qg7-mf45","permalink":"https://vulnpulse.app/items/ghsa-ghsa-fc9g-5qg7-mf45","summary":"影響: pip:pillow >= 9.2.0, < 13.0.0 → 13.0.0\nOn Pillow 12.3.0 and upstream main (ad277e2761b489681e71b51e91367d46b0ceabb9), a GIF with a long comment makes _get_global_header() copy portions of the comment repeatedly when saving, including comments carried over from untrusted images. I suggest provisional Moderate severity for crafted-image CPU denial of service, with CVSS-B 6.9 assuming a network service automatically opens unauthenticated uploads and they are resaved as GIFs; impact depends on input-size, concurrency, and worker CPU lim…","severity":"medium","techs":["python"],"cves":["CVE-2026-112891"],"tags":["GHSA-fc9g-5qg7-mf45","pillow"],"source":{"id":"ghsa","name":"GitHub Advisory Database"},"published_at":"2026-10-21T20:38:43.000Z","fetched_at":"2026-10-21T20:42:51.679Z"}