CVE-2026-7958

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-06 · updated 2026-10-26
Weakness: CWE-79

Description

Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted Chrome Extension. (Chromium security severity: Medium)

Affected products

Google Chrome: before 148.0.7778.96 — fixed in 148.0.7778.96

How to fix

Upgrade to a fixed version: Google Chrome 148.0.7778.96. Check the vendor advisory for mitigations.

References

https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html
https://issues.chromium.org/issues/496632973

Get alerted when CVE-2026-7958 or the next vulnerability affects your stack