CVE-2026-27888
pypdf: Manipulated FlateDecode XFA streams can exhaust RAM
EPSS 0.35%
描述
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.3, an attacker who uses this vulnerability can craft a PDF which leads to the RAM being exhausted. This requires accessing the `xfa` property of a reader or writer and the corresponding stream being compressed using `/FlateDecode`. This has been fixed in pypdf 6.7.3. As a workaround, apply the patch manually.
如何修補 CVE-2026-27888
要修補 CVE-2026-27888,請將受影響套件升級到下列已修補版本。
- PyPI/pypdf—升級至 6.7.3 或更新版本
- —升級至 6.7.3 或更新版本
CVE-2026-27888 正在被利用嗎?
低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。
受影響套件(2)
- from 0, < 6.7.3
- from 0, < 6.7.3
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U |