Answer in brief
CVE-2026-54735 records a Critical severity security vulnerability in prebid-server's request forgery vulnerability allows for possible host environment data extraction. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
Answer in brief
CVE-2026-54735 records a Critical severity security vulnerability in prebid-server's request forgery vulnerability allows for possible host environment data extraction. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
Update github.com/prebid/prebid-server/v4 to 4.4.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanVulnerability describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-54735 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| github.com/prebid/prebid-servergo | <=0.275.0 | Not reported |
| github.com/prebid/prebid-server/v2go | <=2.32.0 | Not reported |
| github.com/prebid/prebid-server/v3go | <=3.30.0 | Not reported |
| github.com/prebid/prebid-server/v4go | <4.4.0 | 4.4.0 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-54735 records a Critical severity security vulnerability in prebid-server's request forgery vulnerability allows for possible host environment data extraction. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for github.com/prebid/prebid-server, github.com/prebid/prebid-server/v2, github.com/prebid/prebid-server/v3.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL GuardUpdate github.com/prebid/prebid-server/v4 to 4.4.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanVulnerability describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-54735 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| github.com/prebid/prebid-servergo | <=0.275.0 | Not reported |
| github.com/prebid/prebid-server/v2go | <=2.32.0 | Not reported |
| github.com/prebid/prebid-server/v3go | <=3.30.0 | Not reported |
| github.com/prebid/prebid-server/v4go | <4.4.0 | 4.4.0 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-54735 records a Critical severity security vulnerability in prebid-server's request forgery vulnerability allows for possible host environment data extraction. The source record does not mark it as known exploited. 4 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for github.com/prebid/prebid-server, github.com/prebid/prebid-server/v2, github.com/prebid/prebid-server/v3.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard### 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.
### 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.