Hi,

The following vulnerability was published for pypdf.

CVE-2026-40260[0]:
| pypdf is a free and open-source pure-python PDF library. In versions
| prior to 6.10.0, manipulated XMP metadata entity declarations can
| exhaust RAM. An attacker who exploits this vulnerability can craft a
| PDF which leads to large memory usage. This requires parsing the XMP
| metadata. This issue has been fixed in version 6.10.0.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-40260
https://www.cve.org/CVERecord?id=CVE-2026-40260
[1] https://github.com/py-pdf/pypdf/pull/3724
[2] https://github.com/py-pdf/pypdf/security/advisories/GHSA-3crg-w4f6-42mx

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore