What is GHSA-g8q5-42mc-pjxg?

GHSA-g8q5-42mc-pjxg is a security advisory published by GitHub Security Advisories with Medium severity. Insufficient validation of untrusted input in OptimizationGuide in Google Chrome prior to 148.0...

Which CVE IDs does GHSA-g8q5-42mc-pjxg cover?

GHSA-g8q5-42mc-pjxg covers the following CVE IDs: CVE-2026-9986. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-g8q5-42mc-pjxg?

GHSA-g8q5-42mc-pjxg has a CVSS v3 base score of 4.2, published by GitHub Security Advisories.

GHSA-g8q5-42mc-pjxgMediumCVSS 4.2

Insufficient validation of untrusted input in OptimizationGuide in Google Chrome prior to 148.0...

Vendor

GitHub Security Advisories

Published

May 29, 2026

Last Modified

May 29, 2026

🔗 CVE IDs covered (1)

CVE-2026-9986 →

📋 Description

Insufficient validation of untrusted input in OptimizationGuide in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: High)

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-9986
https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
https://issues.chromium.org/issues/513028160
https://github.com/advisories/GHSA-g8q5-42mc-pjxg