What is CVE-2026-91736?

CVE-2026-91736 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Chromium CVE-2026-91736: Use after free

Which CVE IDs does CVE-2026-91736 cover?

CVE-2026-91736 covers the following CVE IDs: CVE-2026-91736. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-91736?

CVE-2026-91736 has a CVSS v3 base score of 8.8, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-91736?

CVE-2026-91736 affects 1 product, including: Microsoft Edge (Chromium-based).

CVE-2026-91736HighCVSS 8.8

Chromium CVE-2026-91736: Use after free

Vendor

Microsoft Security Response Center (MSRC)

Published

September 17, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-91736 →

📋 Description

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases](https://chromereleases.googleblog.com/2026)) for more information.

🎯 Affected products1

Microsoft Edge (Chromium-based)

✅ Remediation

KBRelease Notes (Security Update) — fixed build 153.0.4234.46

🔗 References (2)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-91736
referencehttps://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security