PYSEC-2026-3027
pypdf: Manipulated FlateDecode XFA streams can exhaust RAM
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2026-27888
- Alias
- GHSA-x7hp-r3qg-r3cj
- CVSS_V4
- 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
Description
### Impact 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`. ### Patches This has been fixed in [pypdf==6.7.3](https://github.com/py-pdf/pypdf/releases/tag/6.7.3). ### Workarounds If projects cannot upgrade yet, consider applying the changes from PR [#3658](https://github.com/py-pdf/pypdf/pull/3658).
Paquets affectés
| Paquet | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.7.3 |
Références
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-x7hp-r3qg-r3cj WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-27888 ADVISORY
- https://github.com/py-pdf/pypdf/pull/3658 WEB
- https://github.com/py-pdf/pypdf/commit/7a4c8246ed48d9d328fb596942271da47b6d109c WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.7.3 WEB
- https://pypi.org/project/pypdf PACKAGE
- https://github.com/advisories/GHSA-x7hp-r3qg-r3cj ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |