Medium severity4.2NVD Advisory· Published May 28, 2026· Updated May 29, 2026

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

Google/Chromeinferred2 versions
<148.0.7778.216+ 1 more
- (no CPE)range: <148.0.7778.216
- (no CPE)range: <148.0.7778.216

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.htmlnvd
issues.chromium.org/issues/513028160nvd

News mentions

No linked articles in our index yet.

cvss	0.273
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000