CVE-2026-92812

critical · 9.3

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.

9.3

CVSS

0.4%

EPSS (exploit prob.)

38th

EPSS percentile

2026-09-16

Published

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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

Weaknesses

CWE-22

References

https://github.com/decaporg/decap-cms/releases?page=2#[email protected]
https://github.com/decaporg/decap-cms/security/advisories/GHSA-5rrq-v82w-qpfr
https://github.com/geo-chen/oss/blob/main/decap-cms.md
https://www.vulncheck.com/advisories/decap-cms-path-traversal-via-sibling-directory-prefix-matching

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-92812