CVE-2026-11657

unknowncovered by 1 sourcefirst seen 2026-06-09

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

What: This vulnerability is a use after free issue in ServiceWorker.
Who is affected: Microsoft Edge (Chromium-based) users that ingest Chromium.
Urgency: Remediation is necessary as it could lead to potential exploitation, although the severity is currently unknown.
Action: Refer to Google Chrome Releases for updates and patches.

AI-assisted analysis generated from the source advisory — verify against the original.

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Exploitation outlook

Low exploitation risk0.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all EPSS-scored CVEs.

Advisory coverage (1)

unknownCVE-2026-11657: Chromium: CVE-2026-11656 Use after free in ServiceWorkermsrc · 2026-06-09

External references

NVD record for CVE-2026-11657

CVE.org record

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