Vulnerability Description
pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-reference streams with wrong large `/Size` values or object streams with wrong large `/N` values. This has been fixed in pypdf 6.10.1. As a workaround, one may apply the changes from the patch manually.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.10.1 |
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/pypdf/commit/62338e9d36419cf193ccec7331784f45df1d70b3Patch
- https://github.com/py-pdf/pypdf/pull/3733Issue TrackingPatch
- https://github.com/py-pdf/pypdf/releases/tag/6.10.1ProductRelease Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-jj6c-8h6c-hppxMitigationPatchVendor Advisory
FAQ
What is CVE-2026-41168?
CVE-2026-41168 is a vulnerability with a CVSS score of 5.3 (MEDIUM). pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions prior to 6.10.1 can craft a PDF which leads to long runtimes. This requires cross-refe...
How severe is CVE-2026-41168?
CVE-2026-41168 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-41168?
Check the references section above for vendor advisories and patch information. Affected products include: Pypdf Project Pypdf.