Medium severity4.2NVD Advisory· Published May 28, 2026· Updated May 29, 2026
CVE-2026-9986
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)
Affected products
6- osv-coords3 versionspkg:apk/chainguard/chromiumpkg:apk/wolfi/chromiumpkg:rpm/opensuse/chromium&distro=openSUSE%20Tumbleweed
< 149.0.7827.53-r0+ 2 more
- (no CPE)range: < 149.0.7827.53-r0
- (no CPE)range: < 149.0.7827.53-r0
- (no CPE)range: < 148.0.7778.215-1.1
Patches
Vulnerability mechanics
References
2- chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.htmlnvdVendor Advisory
- issues.chromium.org/issues/513028160nvdPermissions Required
News mentions
1- Chrome 148: 25 CVEs Patched in One Day, Heavy on Use-After-Free and Sandbox EscapesVypr Intelligence · May 28, 2026