CVE-2026-92812CWE-22path-traversal

CVE-2026-92812

Critical · published September 17, 2026

CVSS v3.1
9.8
EPSS
0%
Percentile
35.1
In the wild
Unconfirmed
What it is

Decap CMS before 3.11.0 contains a path traversal vulnerability in the local proxy containment guard that uses plain string prefix comparison without path separator validation. Attackers can access sibling directories whose names begin with the repository directory name to read, write, or delete files outside the intended repository root.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
7.6 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00419 · 35.1th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-09-17T01:17Z
References (4)
https://github.com/decaporg/decap-cms/releases?page=2#[email protected] · [email protected]https://github.com/decaporg/decap-cms/security/advisories/GHSA-5rrq-v82w-qpfr · [email protected]https://github.com/geo-chen/oss/blob/main/decap-cms.md · [email protected]https://www.vulncheck.com/advisories/decap-cms-path-traversal-via-sibling-directory-prefix-matching · [email protected]
EPSS history
Timeline
  • 18 SEP 04:02Z
    EPSS moved — → 0%
    epss
  • 16 SEP 20:32Z
    decap-server Path Traversal via Sibling Directory Prefix Matching
    cvelistv5