PYSEC-2026-4155
pypdf: Possible large memory usage when parsing font data
En bref
- Publiée
- Mise à jour
- CVE
- CVE-2026-102996
- Alias
- GHSA-g9cg-prrw-2r8q
- 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
Description
### Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory consumption. This requires parsing the `/Widths` entry of a TrueType or Type1 fonts with unusually large values, for example during text extraction. ### Patches This has been fixed in [pypdf==6.18.1](https://github.com/py-pdf/pypdf/releases/tag/6.18.1). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4072](https://github.com/py-pdf/pypdf/pull/4072).
Paquets affectés
| Paquet | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.18.1 |
Références
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-g9cg-prrw-2r8q WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-102996 ADVISORY
- https://github.com/py-pdf/pypdf/pull/4072 WEB
- https://github.com/py-pdf/pypdf/commit/0fb26eb8cdd01c44b3b2c9fe8329751be2f7cfd5 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.18.1 WEB
- https://pypi.org/project/pypdf PACKAGE
- https://github.com/advisories/GHSA-g9cg-prrw-2r8q ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |