CVE-2026-12459
MEDIUMCVSS 6.1/10EPSS 0.18%
Last modified
CVE-2026-12459 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Inappropriate implementation in Serial in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: High). EPSS estimates a 0.18% chance of exploitation in the next 30 days.
Description
Inappropriate implementation in Serial in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: High)
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Chrome | < 149.0.7827.155 |
References
- https://issues.chromium.org/issues/517406035Permissions Required
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-12459?
Inappropriate implementation in Serial in Google Chrome prior to 149.0.7827.155 allowed a remote attacker to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: High)
How severe is CVE-2026-12459?
CVE-2026-12459 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.18% probability of exploitation in the next 30 days.
How do I fix CVE-2026-12459?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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-2026-12453Insufficient validation of untrusted input in Input in Googl…4.2
- CVE-2026-12454Race in Safe Browsing in Google Chrome on Mac prior to 149.0…8.3
- CVE-2026-12455Use after free in Tab Strip in Google Chrome prior to 149.0.…7.5
- CVE-2026-12456Inappropriate implementation in Extensions in Google Chrome …4.2
- CVE-2026-12457Inappropriate implementation in Extensions in Google Chrome …4.2
- CVE-2026-12458Inappropriate implementation in Passwords in Google Chrome p…3.1
- CVE-2026-1246The ShortPixel Image Optimizer plugin for WordPress is vulne…4.9
- CVE-2026-12460Insufficient policy enforcement in File System Access in Goo…4.2
- CVE-2026-12461Out of bounds read in WebRTC in Google Chrome on Windows pri…6.5
- CVE-2026-12462Use after free in Media in Google Chrome prior to 149.0.7827…7.5
- CVE-2026-12463Inappropriate implementation in Views in Google Chrome on Li…4.7
- CVE-2026-12464Use after free in Browser in Google Chrome prior to 149.0.78…8.3
Are you affected by CVE-2026-12459?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST