AIKIDO-2026-821691
mcp-atlassian is vulnerable to Server-Side Request Forgery (SSRF)
53
Medium Risk
This Affects:
mcp-atlassianTL;DR
The Jira user-permission lookup issues its request with the module-level requests.get instead of the SSRF-hooked session, so the redirect-validation hook never runs for that path. An unauthenticated client on the multi-user HTTP transport can supply a public base URL that passes validation and then redirect the follow-up request to an internal address. This yields a blind server-side request to arbitrary internal hosts and ports. The fix routes the lookup through the hardened session so redirects are re-validated.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you run the multi-user HTTP transport that accepts caller-supplied Atlassian URL headers.
Background info
mcp-atlassian is vulnerable to Server-Side Request Forgery (SSRF) in versions 0.0.1 - 0.21.1.
How to fix this
Upgrade the mcp-atlassian library to the patch version.
Are You Affected?
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