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CVE-2026-54735

10.0 critical SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 3

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 10.0 · prebidNVD modified 2026-10-23 23:10

Affected (CPE criteria) 1

  • cpe:2.3:a:prebid:prebid_server:*:*:*:*:*:go:*:*

References 4