# CVE-2025-59039

## Summary

- **CVE ID:** CVE-2025-59039
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (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)
- **CWE:** CWE-506
- **Published:** Sep 9, 2025
- **Last Modified:** Mar 13, 2026

## 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 The maintainers of PUC unpublished version 1.17.3.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 Products

- prebid — prebid-universal-creative (= 1.17.3)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.33%
- **EPSS Percentile:** 26.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._