CVEvulnerability

CVE-2026-54734

10.0 CRITICAL Published 2026-09-17 Modified 2026-09-23 Official page ↗
Status
Awaiting Analysis
Published
2026-09-17
Last modified
2026-09-23
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 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.

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References