prebid-server's request forgery vulnerability allows for possible host environment data extraction
Exact source revision recorded 24 Oct 2026 13:19:41 UTC. It does not establish the source's current position. Latest evidence.
osv · GHSA-4p3g-4hcj-wpvx
Published### Impact Certain bidder adapters accept user-supplied parameters that are interpolated into outbound request URLs. Without proper input validation, a malicious actor could craft bid request parameters that cause the server to send HTTP requests to unintended destinations, potentially exposing internal network services or sensitive server endpoints to unauthorized access. ### Patches Patched in [v4.4.0](https://github.com/prebid/prebid-server/releases/tag/v4.4.0) ### Workarounds If one is unable to update, please make sure that the affected bidder adapters are disabled.
- Source published
- 29 Jul 2026 16:00:36 UTC
- Source modified
- 18 Aug 2026 17:23:47 UTC
- Observed here
- 24 Oct 2026 13:19:41 UTC
- Source terms
- GitHub Advisory Database · CC-BY-4.0
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.
CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Publisher rating · CRITICAL