CVE-2025-59039

Prebid Universal Creative on npm briefly compromised

CVSS 9.3 CRITICALEPSS 0.3%CWE-506

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.3EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

09 Sep 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Prebid Universal Creative (PUC) is a JavaScript API to render multiple formats. Npm users of PUC 1.17.3 or PUC latest were briefly affected by crypto-related malware. This includes the extremely popular jsdelivr hosting of this file. The maintainers of PUC unpublished version 1.17.3. Users should see Prebid.js 9 release notes for suggestions on moving off the deprecated workflow of using the PUC or pointing to a dynamic version of it. PUC users pointing to latest should transition to 1.17.2 as soon as possible to avoid similar attacks in the future.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

prebid · prebid-universal-creative

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References

https://github.com/prebid/prebid-universal-creative/security/advisories/GHSA-m662-56rj-8fmm https://www.sonatype.com/blog/npm-chalk-and-debug-packages-hit-in-software-supply-chain-attack