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.
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Affected Vendors & Products
References
History
Wed, 29 Jul 2026 18:30:00 +0000
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ssvc
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Wed, 29 Jul 2026 16:15:00 +0000
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| 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. | |
| Title | prebid-server's request forgery vulnerability allows for possible host environment data extraction | |
| Weaknesses | CWE-918 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-29T18:04:18.670Z
Reserved: 2026-06-15T23:07:33.233Z
Link: CVE-2026-54735
Updated: 2026-07-29T18:04:14.876Z
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OpenCVE Enrichment
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