CVE-2026-115207

Patch: filename validation bypass in reversal fallback allows file creation outside the working directory

State: Published
Severity: 5.5 Medium
Published: Oct 22, 2026
Updated: Oct 28, 2026
Reserved: Oct 22, 2026

Description

A flaw was found in GNU patch. An attacker can achieve arbitrary file creation outside the intended working directory by enticing a user or automated workflow to apply a specially crafted patch file. Due to missing validation during automatic patch reversal, absolute file paths in patch headers are accepted rather than rejected. Consequently, the utility can create files in arbitrary locations with the permissions of the executing user.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	redhat

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat
Red Hat Hardened ImagesRed Hat

References

https://access.redhat.com/security/cve/CVE-2026-115207vdb-entry
RHBZ#2558775issue-tracking
http://www.openwall.com/lists/oss-security/2026/10/26/14

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