PYSEC-2026-1830
PyPDF's Manipulated FlateDecode streams can exhaust RAM
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2025-55197
- Alias
- GHSA-7hfw-26vp-jp8m
- 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 just reading the file if a series of FlateDecode filters is used on a malicious cross-reference stream. Other content streams are affected on explicit access. ### Patches This has been fixed in [pypdf==6.0.0](https://github.com/py-pdf/pypdf/releases/tag/6.0.0). ### Workarounds If you cannot upgrade yet, you might want to implement the workaround for `pypdf.filters.decompress` yourself: https://github.com/py-pdf/pypdf/blob/0dd57738bbdcdb63f0fb43d8a6b3d222b6946595/pypdf/filters.py#L72-L143 ### References This issue has been reported in #3429 and fixed in #3430.
Paquets affectés
| Paquet | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.0.0 |
Références
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-7hfw-26vp-jp8m WEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-55197 ADVISORY
- https://github.com/py-pdf/pypdf/issues/3429 WEB
- https://github.com/py-pdf/pypdf/pull/3430 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/blob/0dd57738bbdcdb63f0fb43d8a6b3d222b6946595/pypdf/filters.py#L72-L143 WEB
- https://github.com/py-pdf/pypdf/releases/tag/6.0.0 WEB
- https://pypi.org/project/pypdf PACKAGE
- https://github.com/advisories/GHSA-7hfw-26vp-jp8m ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |