Source: pypdf Version: 5.4.0-1 Severity: important Tags: security upstream Forwarded: https://github.com/py-pdf/pypdf/pull/3644 X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]>
Hi, The following vulnerability was published for pypdf. CVE-2026-27026[0]: | pypdf is a free and open-source pure-python PDF library. Prior to | 6.7.1, an attacker who uses this vulnerability can craft a PDF which | leads to long runtimes. This requires a malformed /FlateDecode | stream, where the byte-by-byte decompression is used. This | vulnerability is fixed in 6.7.1. This fix has a dependency to a fix for CVE-2025-55197. 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-2026-27026 https://www.cve.org/CVERecord?id=CVE-2026-27026 [1] https://github.com/py-pdf/pypdf/pull/3644 [2] https://github.com/py-pdf/pypdf/security/advisories/GHSA-9mvc-8737-8j8h [3] https://github.com/py-pdf/pypdf/commit/7905842d833f899f1d3228af7e7467ad80277016 Please adjust the affected versions in the BTS as needed. Regards, Salvatore
