MEDIUMCVSS v4 6.0Vulnerability

CVE-2026-113793

### Impact An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop. This requires removing an object from a tree, for example an outline item. ### Patches This has been fixed in [pypdf==6.20.1](https://github.com/py-pdf/pypdf/releases/tag/6.20.1). ### Workarounds If you cannot upgrade yet, consider applying the changes from PR [#4188](https://github.com/py-pdf/pypdf/pull/4188).

Properties

Severity
medium
Summary
pypdf: Possible infinite loop when removing tree items
Nvd fetched at
2026-10-22T22:14:18.200859+00:00
Epss score
0.00466
Cvss severity
MEDIUM
Cvss score
6
Retrieved at
2026-10-22T22:17:33+00:00
Ghsa published
2026-10-21T16:55:10Z
Source url
https://github.com/advisories/GHSA-9mx8-4j7g-633p
Ghsa updated
2026-10-21T16:55:12Z
Ghsa id
GHSA-9mx8-4j7g-633p
Last source
FIRST EPSS
Cvss version
4.0
Score
6
Cve id
CVE-2026-113793
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
First seen by Signal
2026-10-21T17:40:10+00:00
Is ghsa only
false
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
Published at
2026-10-21T16:17:27.327

Related Entities (3)

AFFECTS (1)

→[Software]pip/pypdf

VULNERABLE_TO (1)

←[Software]pip/pypdf

Explore deeper with Ninja Signal's threat intelligence graph

CVE-2026-113793 (CVSS v4 6) — Ninja Signal Threat Intelligence | Ninja Signal