CVE-2026-108585
argocd-mcp (Argo CD MCP Server) through 0.9.0 contains a path traversal vulnerability in the delete_application tool that allows MCP clients to reach unintended API endpoints via unvalidated applicationName values.
Does this matter?
Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own.
Description
argocd-mcp (Argo CD MCP Server) through 0.9.0 contains a path traversal vulnerability in the delete_application tool that allows MCP clients to reach unintended API endpoints via unvalidated applicationName values. Attackers or prompt-injected models can supply dot-segment values like ../repositories/ to send authenticated DELETE requests deleting repositories, clusters, or projects within the token's RBAC permissions.
- CVSS 4.0
- 5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/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/M
- EPSS
- 0.29% probability · 21th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Source
- disclosure@vulncheck.com
EPSS moved from 0.3% on 11 October 2026 to 0.3% on 26 October 2026.
References
- https://github.com/argoproj-labs/mcp-for-argocd
- https://github.com/argoproj-labs/mcp-for-argocd/blob/28d15ca69b0c31387cc6ec73d201fd13c5d22b6a/src/argocd/client.ts#L115-L139
- https://github.com/argoproj-labs/mcp-for-argocd/blob/28d15ca69b0c31387cc6ec73d201fd13c5d22b6a/src/argocd/http.ts#L86-L91
- https://hackmd.io/@haind/argocd-mcp-delete-application-route-smuggling
- https://www.vulncheck.com/advisories/argocd-mcp-through-0.9.0-path-traversal-via-delete-application-tool
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.