PYSEC-2026-3013
pypdf has a possible infinite loop when processing TreeObject
At a glance
- Published
- Updated
- CVE
- CVE-2026-27024
- Aliases
- GHSA-996q-pr4m-cvgq
- 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 an infinite loop. This requires accessing the children of a `TreeObject`, for example as part of outlines. ### 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 [#3645](https://github.com/py-pdf/pypdf/pull/3645).
Affected packages
| Package | Versions |
|---|---|
| PyPI · pypdf | introduced 0, fixed 6.7.1 |
References
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-996q-pr4m-cvgq WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-27024 ADVISORY
- https://github.com/py-pdf/pypdf/pull/3645 WEB
- https://github.com/py-pdf/pypdf/commit/bd2f6d052fe5941e85e37082c2a43453d48d1295 WEB
- https://github.com/py-pdf/pypdf PACKAGE
- https://github.com/py-pdf/pypdf/releases/tag/6.7.1 WEB
- https://pypi.org/project/pypdf PACKAGE
- https://github.com/advisories/GHSA-996q-pr4m-cvgq ADVISORY
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — PyPA Advisory Database |