Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing a content stream with many small operations, causing parsing to consume large amounts of memory. This issue is fixed in version 6.21.0.
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/pypdf/commit/18bd2981a74479483a0b9507602c58a63d6c9b12
- https://github.com/py-pdf/pypdf/pull/4218
- https://github.com/py-pdf/pypdf/releases/tag/6.21.0
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-cgf9-327m-v77c
FAQ
What is CVE-2026-113791?
CVE-2026-113791 is a documented vulnerability. pypdf is a free and open-source pure-python PDF library. Prior to 6.21.0, an attacker can craft a PDF containing a content stream with many small operations, causing parsing to consume large amounts o...
How severe is CVE-2026-113791?
CVSS scoring is not yet available for CVE-2026-113791. Check NVD for updates.
Is there a patch for CVE-2026-113791?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.