{"id":"CVE-2026-54735","revision":"581661c814bf444ba0fc33b8287a2cd2","records":[{"revision":"581661c814bf444ba0fc33b8287a2cd2","observedAt":"2026-10-25T13:17:34.255+00:00","statement":{"source":"nvd","id":"CVE-2026-54735","aliases":[],"title":"Prebid Server is an open-source solution for running real-time advertising auctions in the cloud. Prior to version 4.4.0, certain bidder adapters in Prebid Server interpolate user-supplied parameters into outbound request URLs without prope…","description":"Prebid Server is an open-source solution for running real-time advertising auctions in the cloud. Prior to version 4.4.0, certain bidder adapters in Prebid Server interpolate user-supplied parameters into outbound request URLs without properly validating host and subdomain values, allowing crafted bid request parameters to cause server-side requests to unintended destinations and potentially expose internal network services or sensitive server endpoints. This issue is fixed in version 4.4.0.","state":0,"publishedAt":"2026-07-29T16:17:54.317+00:00","modifiedAt":"2026-10-23T23:10:00.157+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10,"severity":"CRITICAL"}],"references":["https://github.com/prebid/prebid-server/commit/494ac271cd4b5024df9123ef25ca3cff96390be3","https://github.com/prebid/prebid-server/pull/4802","https://github.com/prebid/prebid-server/releases/tag/v4.4.0","https://github.com/prebid/prebid-server/security/advisories/GHSA-4p3g-4hcj-wpvx"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-54735","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-918"],"productCriteria":["cpe:2.3:a:prebid:prebid_server:*:*:*:*:*:go:*:*"],"sourceDates":{"published":"2026-07-29T16:17:54.317","lastModified":"2026-10-23T23:10:00.157"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-54735","identifiers":["CVE-2026-54735"]},"retained":false,"historicalAffected":[]}],"coverage":[]}