PYSEC-2026-3016
pypdf: Possible large memory usage for large offsets for layout mode text
At a glance
- Published
- Updated
- CVE
- CVE-2026-48155
- Aliases
- GHSA-cj93-chg6-vgv8
- CVSS_V4
- CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Description
### Impact An attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires extracting text in layout mode with large character offsets. ### Patches This has been fixed in [pypdf==6.12.0](https://github.com/py-pdf/pypdf/releases/tag/6.12.0). ### Workarounds If developers are unable to immediately upgrade, they should consider applying the changes from PR [#3790](https://github.com/py-pdf/pypdf/pull/3790).
Affected packages
| Package | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.12.0 |
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-cj93-chg6-vgv8 WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-48155 ADVISORY
- https://github.com/py-pdf/pypdf/pull/3790 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.12.0 WEB
- https://pypi.org/project/pypdf PACKAGE
- https://github.com/advisories/GHSA-cj93-chg6-vgv8 ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |