CVE-2026-7940
Last modified
CVE-2026-7940 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Use after free in V8 in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: Medium). EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
Use after free in V8 in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: Medium)
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Chrome | < 148.0.7778.96 |
References
- https://issues.chromium.org/issues/493631402Issue Tracking, Permissions Required
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-7940?
How severe is CVE-2026-7940?
How do I fix CVE-2026-7940?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-7934Insufficient validation of untrusted input in Popup Blocker …4.2
- CVE-2026-7935Inappropriate implementation in Speech in Google Chrome prio…5.4
- CVE-2026-7936Rejected reason: Determined not a vulnerability
- CVE-2026-7937Insufficient policy enforcement in DevTools in Google Chrome…3.1
- CVE-2026-7938Use after free in CSS in Google Chrome prior to 148.0.7778.9…8.8
- CVE-2026-7939Inappropriate implementation in SanitizerAPI in Google Chrom…5.4
- CVE-2026-7941Insufficient validation of untrusted input in Mobile in Goog…4.4
- CVE-2026-7942Integer overflow in ANGLE in Google Chrome prior to 148.0.77…4.3
- CVE-2026-7943Insufficient validation of untrusted input in ANGLE in Googl…4.2
- CVE-2026-7944Insufficient validation of untrusted input in Persistent Cac…3.1
- CVE-2026-7945Insufficient validation of untrusted input in COOP in Google…3.1
- CVE-2026-7946Insufficient policy enforcement in WebUI in Google Chrome on…4.3
Are you affected by CVE-2026-7940?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST