{"items":[{"id":"NVI-00014033","kind":"vulnerability","title":"[mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-wrhw-j3f9-8vc6","CVE-2026-77244"],"plain_summary":"GitHub lists this reviewed advisory for mcp-atlassian. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1fe20b6c3df8cf6988caa36f1ac2d006"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-22T20:36:27.000Z","value":"10 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-353c9e95a12048653072c30a2aa8cd7a"},{"kind":"CVSS","as_of":"2026-09-29T15:17:49.490Z","value":"10 CRITICAL (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-1fe20b6c3df8cf6988caa36f1ac2d006"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-353c9e95a12048653072c30a2aa8cd7a","url":"https://github.com/advisories/GHSA-wrhw-j3f9-8vc6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wrhw-j3f9-8vc6","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:31.527Z"},{"id":"sr-1fe20b6c3df8cf6988caa36f1ac2d006","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77244","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-77244","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T19:47:48.947Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-353c9e95a12048653072c30a2aa8cd7a"],"technology":"mcp-atlassian","known_exclusions":[],"conditions_summary":"**Description**\n\nmcp-atlassian deploys in two common patterns:\n\n  Pattern A (single-user, server-side credentials): operator sets\n    JIRA_USERNAME + JIRA_API_TOKEN (or CONFLUENCE_USERNAME + CONFLUENCE_API_TOKEN)\n    in environment variables. Server uses these to call Jira/Confluence.\n    This is the documented quickstart pattern.\n\n  Pattern B (multi-user, OAuth or per-request PAT): operator sets up OAuth\n    proxy or accepts per-user tokens via Authorization or service headers.\n\nThe authentication mechanism in HTTP transport has two issues that combine\nto permit unauthenticated access to Pattern A deployments:\n\n1. AtlassianOpaqueTokenVerifier.verify_token() at\n   `src/mcp_atlassian/utils/token_verifier.py` accepts any non-empty string\n   as a valid token:\n\n       async def verify_token(self, token: str) -> AccessToken | None:\n           if not token:\n               return None\n           scopes = self.required_scopes or []\n           return AccessToken(\n               token=token,\n               client_id=\"atlassian\",\n               scopes=scopes,\n               expires_at=int(time.time()) + 86400 * 30,\n           )\n\n   The docstring documents this: \"we accept non-empty tokens and","public_affected_ranges":["< 0.22.0"]}],"null_published_at":"2026-11-08T19:53:44.037Z","source_updated_at":"2026-09-22T20:36:27.000Z","source_disclosed_at":"2026-09-22T20:36:26.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-01T14:29:31.527Z"},{"id":"NVI-00014033","kind":"vulnerability","title":"[mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-wrhw-j3f9-8vc6","CVE-2026-77244"],"plain_summary":"GitHub lists this reviewed advisory for mcp-atlassian. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-353c9e95a12048653072c30a2aa8cd7a"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-22T20:36:27.000Z","value":"10 critical","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-353c9e95a12048653072c30a2aa8cd7a"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-353c9e95a12048653072c30a2aa8cd7a","url":"https://github.com/advisories/GHSA-wrhw-j3f9-8vc6","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-wrhw-j3f9-8vc6","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:31.527Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-353c9e95a12048653072c30a2aa8cd7a"],"technology":"mcp-atlassian","known_exclusions":[],"conditions_summary":"**Description**\n\nmcp-atlassian deploys in two common patterns:\n\n  Pattern A (single-user, server-side credentials): operator sets\n    JIRA_USERNAME + JIRA_API_TOKEN (or CONFLUENCE_USERNAME + CONFLUENCE_API_TOKEN)\n    in environment variables. Server uses these to call Jira/Confluence.\n    This is the documented quickstart pattern.\n\n  Pattern B (multi-user, OAuth or per-request PAT): operator sets up OAuth\n    proxy or accepts per-user tokens via Authorization or service headers.\n\nThe authentication mechanism in HTTP transport has two issues that combine\nto permit unauthenticated access to Pattern A deployments:\n\n1. AtlassianOpaqueTokenVerifier.verify_token() at\n   `src/mcp_atlassian/utils/token_verifier.py` accepts any non-empty string\n   as a valid token:\n\n       async def verify_token(self, token: str) -> AccessToken | None:\n           if not token:\n               return None\n           scopes = self.required_scopes or []\n           return AccessToken(\n               token=token,\n               client_id=\"atlassian\",\n               scopes=scopes,\n               expires_at=int(time.time()) + 86400 * 30,\n           )\n\n   The docstring documents this: \"we accept non-empty tokens and","public_affected_ranges":["< 0.22.0"]}],"null_published_at":"2026-11-02T10:00:37.199Z","source_updated_at":"2026-09-22T20:36:27.000Z","source_disclosed_at":"2026-09-22T20:36:26.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T14:29:31.527Z"}],"next_cursor":null,"snapshot_revision":"42594"}