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CVE-2026-19153: CVE-2026-19153 Insufficient validation of untrusted input in Workers

unknownCVE-2026-19153
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

CSIRTS triage

vendor: Microsoftproduct: EdgeCode injection
What
Insufficient validation of untrusted input in Chromium Workers subsystem addressed in Chrome and ingested by Microsoft Edge.
Who is affected
Users running Microsoft Edge (Chromium-based) versions affected by upstream Chromium issues.
Urgency
Severity unknown; inherited from Chromium/Chrome upstream; refer to Google Chrome Releases for details.
Action
Update Microsoft Edge to the latest version that includes the patched Chromium release.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
unknown
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-19153

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-19153coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

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