CVEvulnerability

CVE-2026-54735

10.0 CRITICAL Published 2026-07-29 Modified 2026-10-23 Official page ↗
Status
Analyzed
Published
2026-07-29
Last modified
2026-10-23
Assigner
[email protected]
CVSS 3.1 ([email protected])
10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-918

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.

Affected configurations

• prebid prebid server (< 4.4.0)

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References