CVE-2026-92812: decaporg decap-cms · Path Traversal
Affects decaporg decap-cmsSource CVE Database V5
Not known to be exploited · CVSS 9.3 Critical : upgrade to 3.11.0 as a priority.
Data as of 1 Nov 2026, 08:20 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 9.3 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 9.8 |
- EPSS
- 0.4% chance of exploitation in 30 days – higher than 38% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 3.11.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 16 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 31 Oct 2026.
What to do
Upgrade decaporg decap-cms to 3.11.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| decaporgdecap-cms | Affected
| Fixed in
|
GitHubdecap-cmspkg:github/decap-cmsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade decap-cms to version 3.11.0 or later, where this path traversal vulnerability is fixed. No other mitigation is indicated by the vendor advisory.
Description
Decap CMS versions prior to 3.11.0 have a critical path traversal vulnerability in the local proxy containment guard. The vulnerability arises from improper pathname limitation using plain string prefix comparison without validating path separators. This flaw allows attackers to access sibling directories with names starting like the repository directory, enabling unauthorized reading, writing, or deletion of files outside the intended repository root. The issue is fixed in version 3.11.0.
References
- github.com/geo-chen/oss/blob/main/decap-cms.md (opens in a new tab)
- github.com/decaporg/decap-cms/blob/11f35405cd1a1d1216e97b890173f46436752019/packages/decap-server/src/middlewares/joi/customValidators.ts (opens in a new tab)
- github.com/decaporg/decap-cms (opens in a new tab)
- vulncheck.com/advisories/decap-server-path-traversal-via-sibling-directory-prefix-matching (opens in a new tab)
- github.com/decaporg/decap-cms/security/advisories/GHSA-5rrq-v82w-qpfr (opens in a new tab)
- github.com/decaporg/decap-cms/releases?page=2 (opens in a new tab)
- vulncheck.com/advisories/decap-cms-path-traversal-via-sibling-directory-prefix-matching (opens in a new tab)