CVE-2026-92812
decap-server Path Traversal via Sibling Directory Prefix Matching
CVSS Score
6.8
EPSS Score
0.0%
EPSS Percentile
0th
decap-server 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.
| CWE | CWE-22 |
| Vendor | decaporg |
| Product | decap-server |
| Published | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
decaporg / decap-server
11f35405cd1a1d1216e97b890173f46436752019
References
github.com: https://github.com/geo-chen/oss/blob/main/decap-cms.md github.com: https://github.com/decaporg/decap-cms/blob/11f35405cd1a1d1216e97b890173f46436752019/packages/decap-server/src/middlewares/joi/customValidators.ts#L11-L16 github.com: https://github.com/decaporg/decap-cms vulncheck.com: https://www.vulncheck.com/advisories/decap-server-path-traversal-via-sibling-directory-prefix-matching
Credits
George Chen