GHSA-9mvc-8737-8j8h
pypdf possibly has long runtimes for malformed FlateDecode streams
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2026-27026
- Alias
- PYSEC-2026-3015
- CVSS_V4
- 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
Description
### Impact An attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires a malformed `/FlateDecode` stream, where the byte-by-byte decompression is used. ### Patches This has been fixed in [pypdf==6.7.1](https://github.com/py-pdf/pypdf/releases/tag/6.7.1). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#3644](https://github.com/py-pdf/pypdf/pull/3644).
Paquets affectés
| Paquet | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.7.1 |
Références
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mvc-8737-8j8h WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-27026 ADVISORY
- https://github.com/py-pdf/pypdf/pull/3644 WEB
- https://github.com/py-pdf/pypdf/commit/7905842d833f899f1d3228af7e7467ad80277016 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.7.1 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |