Prebid vulnerabilities
Published CVEs affecting Prebid products: 2 record(s), with severity, exploitation and fixes.
CVE-2026-54734
Critical · 10.0
CWE-918 Sep 17, 2026
Prebid Server Java: Vulnerability to request forgery allows for possible host environment data extraction
Prebid Server Java is the Java version of Prebid Server. Prior to 3.43.0, certain bidder adapters interpolate user-supplied parameters into outbound request URLs without using HttpUtil to validate the resulting domain or path segment. A malicious actor who can supply bid-request parameters can cause the server to send HTTP requests to unintended destinations, potentially reaching internal network services, metadata endpoints, or other sensitive server endpoints with the server's network access. This issue is fixed in version 3.43.0.
CVE-2026-54735
Critical · 10.0
CWE-918 Jul 29, 2026
prebid-server's request forgery vulnerability allows for possible host environment data extraction
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.