CVSS 3.1
8.8 highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HHigh (8.8) in google chrome. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExplain CVE-2026-126843 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-126843?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-126843?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-126843 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Google Chrome | from 157.0.8103.78 before 157.0.8103.78 |
| Distribution | Release | Package | Fixed in | Advisory |
|---|---|---|---|---|
| Debian | 12, 13, 14 | chromium | no fix listed | DEBIAN-CVE-2026-126843 |
From the distributions' data via OSV.dev: the Debian Security Tracker. Modified: reformatted and linked to CVE records. Credits. On the distributions' own pages: Debian.
Red Hat rates this Important.
This vulnerability is rated as Important severity because it allows remote execution of arbitrary code when an end user accesses a malicious webpage, but any resulting execution remains restricted to the browser sandbox. The flaw requires direct user interaction to trigger rendering of untrusted web content on client systems where the browser is actively in use. While exploitation compromises the isolated rendering process, reaching the underlying host operating system would necessitate chaining this vulnerability with an additional sandbox escape.
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Contains Red Hat Security Data © Red Hat, Inc., licensed under CC BY 4.0. Source: https://access.redhat.com/security/data. Modified: reformatted. Red Hat's page for CVE-2026-126843.
Changes since this site first stored the record. The same for every record: /api/public/changes.