Vulnerability Description
pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This has been fixed in pypdf 6.7.2. As a workaround, one may apply the patch manually.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Pypdf Project | Pypdf | < 6.7.2 |
Related Weaknesses (CWE)
References
- https://github.com/py-pdf/pypdf/commit/f0a462d36971cf077d74492a348d0d06fd60ea4d
- https://github.com/py-pdf/pypdf/issues/3654Issue TrackingPatch
- https://github.com/py-pdf/pypdf/security/advisories/GHSA-2rw7-x74f-jg35PatchVendor Advisory
- https://github.com/py-pdf/pypdf/issues/3654Issue TrackingPatch
FAQ
What is CVE-2026-27628?
CVE-2026-27628 is a vulnerability with a CVSS score of 7.5 (HIGH). pypdf is a free and open-source pure-python PDF library. Prior to 6.7.2, an attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires reading the file. This h...
How severe is CVE-2026-27628?
CVE-2026-27628 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-27628?
Check the references section above for vendor advisories and patch information. Affected products include: Pypdf Project Pypdf.