CVE-2026-22690
MEDIUM5.3EPSS 0.02%pypdf has possible long runtimes for missing /Root object with large /Size values
發布日:2026/1/9修改日:2026/4/28
描述
pypdf is a free and open-source pure-python PDF library. Prior to version 6.6.0, pypdf has possible long runtimes for missing /Root object with large /Size values. An attacker who uses this vulnerability can craft a PDF which leads to possibly long runtimes for actually invalid files. This can be achieved by omitting the /Root entry in the trailer, while using a rather large /Size value. Only the non-strict reading mode is affected. This issue has been patched in version 6.6.0.
受影響套件(3)
- Debian/pypdffrom 0
- Debian/pypdf2from 0
- PyPI/pypdffrom 0, < 6.6.0
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:L/SC:N/SI:N/SA:N/E:U |
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
參考連結(7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-22690
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-22690
- PATCHhttps://github.com/py-pdf/pypdf
- WEBhttps://github.com/py-pdf/pypdf/commit/294165726b646bb7799be1cc787f593f2fdbcf45
- WEBhttps://github.com/py-pdf/pypdf/pull/3594
- WEBhttps://github.com/py-pdf/pypdf/releases/tag/6.6.0
- WEBhttps://github.com/py-pdf/pypdf/security/advisories/GHSA-4xc4-762w-m6cg