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.
CVSS 10EPSS 0.35100000000000003%Risk 1.03
View source- Published
- 2026-07-29 16:17:54
- Affected versions
- <4.4.0
- Type
- Critical software
- Last modified
- 2026-07-30 20:06:04
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H