Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain, causing excessive processing and long runtimes when the file is opened. This issue is fixed in version 6.21.2.
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/pypdf/commit/a3061e34b169d34478d520f5f049c53cfb1482b2
- https://github.com/py-pdf/pypdf/pull/4239
- https://github.com/py-pdf/pypdf/releases/tag/6.21.2
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-gmh7-3g9r-mjh5
FAQ
What is CVE-2026-115580?
CVE-2026-115580 is a documented vulnerability. pypdf is a free and open-source pure-python PDF library. Prior to 6.21.2, an attacker can craft a PDF with a standard cross-reference table whose declared entry count exceeds what the file can contain...
How severe is CVE-2026-115580?
CVSS scoring is not yet available for CVE-2026-115580. Check NVD for updates.
Is there a patch for CVE-2026-115580?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.