CVE-2026-29509: patool 0 to before 4.0.5

CVE-2026-29509. CVSS 3.1 base score 5.4 (MEDIUM, Vendor/CNA). EPSS 0.00371 (percentile 0.29938), scored 24-Oct-2026.

Affected technology

patool · 0 to before 4.0.5
wummel

Description’s affected range: before 4.0.5

Component: Not specified by the source
Function: in

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · Passive user interaction

What an attacker can do

Attackers can supply a malicious archive with specially crafted member paths to write arbitrary files. Vendor/CNA’s CVSS 4.0 assessment (base score 5.3/10) rates confidentiality and integrity impact as low; availability impact as none.

Published 25-Oct-2026 19:52 UTC

CWE: CWE-22
CCR priority: 21.7 /100 (P4)
CVSS 3.1: 5.4 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N · Vendor/CNA
EPSS: 0.00371 · percentile 0.308 · 2026-10-25
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-29509.html