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This is limited to target servers already configured as proxy endpoints and requires Backstage authentication by default.\n\n### Patches\n\nPatched in `@backstage/plugin-proxy-backend` version `0.6.17`\n\n### Workarounds\n\n- Deploy a reverse proxy or WAF in front of Backstage that normalizes request paths before they reach the backend.","public_affected_ranges":["< 0.6.17"]}],"null_published_at":"2026-11-04T10:04:41.585Z","source_updated_at":"2026-10-07T17:59:49.000Z","source_disclosed_at":"2026-10-07T17:59:49.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T00:58:46.232Z"},{"id":"NVI-00011892","kind":"vulnerability","title":"Backstage: Improper input validation in proxy-backend","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9ghw-48h5-v2w5","CVE-2026-106491"],"plain_summary":"GitHub lists this reviewed advisory for @backstage/plugin-proxy-backend. 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This is limited to target servers already configured as proxy endpoints and requires Backstage authentication by default.\n\n### Patches\n\nPatched in `@backstage/plugin-proxy-backend` version `0.6.17`\n\n### Workarounds\n\n- Deploy a reverse proxy or WAF in front of Backstage that normalizes request paths before they reach the backend.","public_affected_ranges":["< 0.6.17"]}],"null_published_at":"2026-11-01T22:58:19.136Z","source_updated_at":"2026-10-07T17:59:49.000Z","source_disclosed_at":"2026-10-07T17:59:49.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T00:58:46.232Z"},{"id":"NVI-00011892","kind":"vulnerability","title":"Backstage: Improper input validation in proxy-backend","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-9ghw-48h5-v2w5","CVE-2026-106491"],"plain_summary":"GitHub lists this reviewed advisory for @backstage/plugin-proxy-backend. 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