Vulnerability · Published Sep 9, 2025 · Assigned by GitHub_M

CVE-2025-59038Prebid.js NPM package briefly compromised

High 8.6

In plain English

A high-severity security flaw in Prebid.js from prebid. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.6High

Exploit odds (30 days)0.4%top 71.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Prebid.js is a free and open source library for publishers to quickly implement header bidding. NPM users of prebid 10.9.2 may have been briefly compromised by a malware campaign. The malicious code attempts to redirect crypto transactions on the site to the attackers' wallet. Version 10.10.0 fixes the issue. As a workaround, it is also possible to downgrade to 10.9.1.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	prebid.js	10.10.0	GHSA-jwq7-6j4r-2f92
npm	prebid.js	no fix listed	MAL-2025-46990

Affected products (as reported)

Vendor	Product	Versions
prebid	Prebid.js	= 10.9.2

Weakness: CWE-506 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References

https://github.com/prebid/Prebid.js/security/advisories/GHSA-jwq7-6j4r-2f92 x_refsource_CONFIRM
https://www.sonatype.com/blog/npm-chalk-and-debug-packages-hit-in-software-supply-chain-attack x_refsource_MISC