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CVE-2026-113794

Updated on 21 Oct 2026

Severity

6.0 Medium severity

Details

CVSS score
6.0
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE ID
Links
NISTCIRCLRHELUbuntu

Overview

About vulnerability

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires an incomplete file which ends inside the xref table.

Patches

This has been fixed in [pypdf==6.20.0](https://github.com/py-pdf/pypdf/releases/tag/6.20.0).

Workarounds

If you cannot upgrade yet, consider applying the changes from PR [#4170](https://github.com/py-pdf/pypdf/pull/4170).

Notes

This has been reported through both the secure channel and as a public issue at [#4169](https://github.com/py-pdf/pypdf/issues/4169).

Details

Affected product:
pypdf
Affected packages:
pypdf @ 5.9.0.post21+tuxcare

Fixes