CVE-2026-7958

FAUCET Score

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)

First published: May 6, 2026Last modified: May 6, 2026

Impacted Technologies

Vendor	Product	Version(s)	CPE
		< 148.0.7778.96CPE matchmatch criteria	cpe:2.3:a:google:chrome::::::::
		>= 148.0.7778.96, < 148.0.7778.96CPE match	cpe:2.3:a:google:chrome::::::::

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

Exploitability Score

2.8

Impact Score

2.5

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.14%

Probability of exploitation in next 30 days

EPSS Percentile

3.9%

Percentile rank of EPSS score among Peer Group

As of 2026-07-27

Model: v2026.06.15

This CVE's current EPSS score of 0.0014 is in the 3rd percentile among its peer group of 26,236 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

microsoftpatch availablevia msrc

Product: Microsoft Edge (Chromium-based)Fixed in: 148.0.3967.54

Vendor Advisories (1)

microsoft2026-May/CVE-2026-7958

Chromium: CVE-2026-7958 Inappropriate implementation in ServiceWorker

May 7, 2026

References

chromereleases.googleblog.com / 2026/05/stable-channel-update-for-desktop.html

Release NotesVendor Advisory

issues.chromium.org / issues/496632973

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