Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP metadata, possibly with lots of unnecessary elements. This vulnerability is fixed in 6.12.1.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.12.1 |
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/pypdf/pull/3796Issue TrackingPatch
- https://github.com/py-pdf/pypdf/releases/tag/6.12.1Release Notes
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-wjqc-6w8f-h24cPatchVendor Advisory
FAQ
What is CVE-2026-48735?
CVE-2026-48735 is a vulnerability with a CVSS score of 5.5 (MEDIUM). pypdf is a free and open-source pure-python PDF library. Prior to 6.12.1, an attacker who uses this vulnerability can craft a PDF which leads to large memory usage. This requires parsing large XMP met...
How severe is CVE-2026-48735?
CVE-2026-48735 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48735?
Check the references section above for vendor advisories and patch information. Affected products include: Pypdf Project Pypdf.