High8.1Red Hat Linux

High [CVE-2026-12459] Inappropriate implementation in Serial

This high-severity Red Hat Linux advisory covers CVE-2026-12459.

CVE-2026-12459 Published Jun 17, 2026Updated by vendor Jun 17, 2026

CVE-2026-12459

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

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) An inappropriate implementation flaw was found in the Serial component of the Chromium browser.

Upstream bug(s): Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory. Red Hat severity: Important — CVSS 8.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N).

Weakness: CWE-79.

Affected versions

< 149.0.7827.155

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation

The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Discussion(0)

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