Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which uses the /FlateDecode filter with a PNG predictor. This vulnerability is fixed in 6.12.2.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.12.2 |
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/pypdf/pull/3806Issue TrackingPatch
- https://github.com/py-pdf/pypdf/releases/tag/6.12.2PatchRelease Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-5hgr-hg42-57jgPatchVendor Advisory
FAQ
What is CVE-2026-49460?
CVE-2026-49460 is a vulnerability with a CVSS score of 3.3 (LOW). pypdf is a free and open-source pure-python PDF library. Prior to 6.12.2, an attacker who uses this vulnerability can craft a PDF which leads to long runtimes. This requires accessing a stream which u...
How severe is CVE-2026-49460?
CVE-2026-49460 has been rated LOW with a CVSS base score of 3.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-49460?
Check the references section above for vendor advisories and patch information. Affected products include: Pypdf Project Pypdf.