{"id":"GHSA-4p3g-4hcj-wpvx","revision":"bf971f4bd3eb40e8bc308d01c98d8a7f","records":[{"revision":"bf971f4bd3eb40e8bc308d01c98d8a7f","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-4p3g-4hcj-wpvx","aliases":["CVE-2026-54735","GO-2026-6139"],"title":"prebid-server's request forgery vulnerability allows for possible host environment data extraction","description":"### Impact\nCertain bidder adapters accept user-supplied parameters that are interpolated into outbound request URLs. Without proper input validation, a malicious actor could craft bid request parameters that cause the server to send HTTP requests to unintended destinations, potentially exposing internal network services or sensitive server endpoints to unauthorized access.\n\n### Patches\nPatched in [v4.4.0](https://github.com/prebid/prebid-server/releases/tag/v4.4.0)\n\n### Workarounds\nIf one is unable to update, please make sure that the affected bidder adapters are disabled.","state":0,"publishedAt":"2026-07-29T16:00:36+00:00","modifiedAt":"2026-08-18T17:23:47.7043999+00:00","affected":[{"ecosystem":"Go","name":"github.com/prebid/prebid-server/v4","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"4.4.0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/prebid/prebid-server/v3","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"3.30.0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/prebid/prebid-server/v2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"2.32.0"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"Go","name":"github.com/prebid/prebid-server","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"last_affected","version":"0.275.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/prebid/prebid-server/security/advisories/GHSA-4p3g-4hcj-wpvx","https://github.com/prebid/prebid-server/pull/4802","https://github.com/prebid/prebid-server/commit/494ac271cd4b5024df9123ef25ca3cff96390be3","https://github.com/prebid/prebid-server","https://github.com/prebid/prebid-server/releases/tag/v4.4.0"],"sourceUrl":"https://github.com/advisories/GHSA-4p3g-4hcj-wpvx","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-4p3g-4hcj-wpvx","identifiers":["GHSA-4p3g-4hcj-wpvx","CVE-2026-54735","GO-2026-6139"]},"retained":false,"historicalAffected":[]}],"coverage":[]}