CVE-2026-27025
MEDIUM5.5EPSS 0.01%pypdf has possible long runtimes/large memory usage for large /ToUnicode streams
發布日:2026/2/18修改日:2026/4/28
描述
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.1, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes and large memory consumption. This requires parsing the /ToUnicode entry of a font with unusually large values, for example during text extraction. This vulnerability is fixed in 6.7.1.
受影響套件(3)
- Debian/pypdffrom 0
- Debian/pypdf2from 0
- PyPI/pypdffrom 0, < 6.7.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | MEDIUM5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
參考連結(7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-27025
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2026-27025
- PATCHhttps://github.com/py-pdf/pypdf
- WEBhttps://github.com/py-pdf/pypdf/commit/77d7b8d7cfbe8dd179858dfa42666f73fc6e57a2
- WEBhttps://github.com/py-pdf/pypdf/pull/3646
- WEBhttps://github.com/py-pdf/pypdf/releases/tag/6.7.1
- WEBhttps://github.com/py-pdf/pypdf/security/advisories/GHSA-wgvp-vg3v-2xq3