Event Monitor Cyber
EM-20261112-L61D VulnerabilityHigh severity

Google Chrome Vulnerability (CVE-2026-126903)

CVE-2026-126903

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Status
Developing

Since : signals keep joining.

First Signal
Nov 11 22:38 UTCC41 Red Hat Security Data
Page Born
Nov 12 00:33 UTCsecond source joined
Last Signal
Nov 12 00:33 UTC20 hours before snapshot
Sources
31 official · 2 research, news or crowd
Open For
22 hoursso far

Life Of This Page

  1. 1
    Born
    A second, independent source names it.
  2. 2
    Developing · Now
    New signals join; severity can move.
  3. 3
    Confirmed
    Not yet
    CISA KEV lists it, or exploitation in the wild is reported.
  4. 4
    Resolved
    Not yet
    Past the fix deadline and 14 days with no new signal.
  5. 5
    Archived
    Not yet
    30 days after resolved. Read only; the link keeps working. Reopens if it comes back.

The ID never changes, and earlier addresses keep working. A correction is logged, never overwritten. If two pages turn out to be one incident, the later one points to the earlier.

Vulnerability Lifecycle

  1. Disclosed: reached
    Nov 11 23:17 UTC
    C6 NVD published
  2. Scored: reached
    Nov 11 23:17 UTC
    CVSS 8.1 · EPSS 0.2%
  3. Exploited: not yet
    Not yet
    No exploitation reported
  4. Advisories: not yet
    Not yet
    None yet
  5. Vendor Response: reached
    Nov 11 22:38 UTC
    C41 published
  6. Resolved: not yet
    Not yet
    After 14 quiet days

Timeline

18:00Nov 1206:0012:00BornC41 Red Hat Security DataC6 NVD CVE API 2.0C29 CIRCL Vulnerability-Lookup

Point at a mark to read it. Squares are signals, colored by severity; every one is also listed under Signals.

Signals

  1. GHSA-7675-v54p-rmqh / CVE-2026-126903 (opens source in a new tab) Improper state validation in ANGLE in Google Chrome on on Windows prior to 157.0.8103.78 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High) Med severityDatabaseC29 CIRCL Vulnerability-Lookup
  2. CVE-2026-126903 (CVSS 8.1) (opens source in a new tab) Improper state validation in ANGLE in Google Chrome on on Windows prior to 157.0.8103.78 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: High) High severityDatabaseC6 NVD CVE API 2.0
  3. Red Hat: CVE-2026-126903 (important) (opens source in a new tab) chromium-browser: chromium-browser: Web origin policy bypass via improper state validation in ANGLE High severityVendorC41 Red Hat Security Data