Vulnerability · Published Sep 9, 2025 · Assigned by GitHub_M
CVE-2025-59039Prebid Universal Creative on npm briefly compromised
Critical 9.3
In plain English
A critical-severity security flaw in prebid-universal-creative from prebid. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Official description
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 The maintainers of PUC unpublished version 1.17.3.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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | prebid-universal-creative | no fix listed | GHSA-m662-56rj-8fmm |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| prebid | prebid-universal-creative | = 1.17.3 |
Weakness: CWE-506 · Vector: 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