CVE-2026-113793

pypdf: pypdf is a free and open-source pure-python PDF library

CVE-2026-113793 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-113793, released October 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
4.3
medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0035
29th percentile

pypdf is a free and open-source pure-python PDF library. Prior to 6.20.1, removing an object from a crafted cyclic PDF tree, such as an outline item, can enter an infinite loop and block the current process. This issue is fixed in version 6.20.1.

Where it's fixed

ProductFixed inFixReleased
Linux
pypdf · Debian 14 6.21.0-1 DEBIAN-CVE-2026-113793 Oct 24, 2026
python-pypdf · opensuse-leap 16.0 6.19.0-bp160.2.1 OPENSUSE-SU-2026:22188-1 Nov 7, 2026

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