Aug 2026: Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
CVE-2026-58616 Published on August 28, 2026
Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.
Weakness Type
What is a Race Condition Vulnerability?
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
CVE-2026-58616 has been classified to as a Race Condition vulnerability or weakness.
Products Associated with CVE-2026-58616
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Affected Versions
Microsoft Edge (Chromium-based):- Version - is affected.
- Version 1.0.0.0 and below 152.0.4191.52 is affected.
- Version 1.0.0.0 and below 152.0.4191.52 is affected.
- Version 1.0.0 and below 152.0.4191.52 is affected.
- Version 1.0.0.0 and below 152.0.4191.52 is affected.
- Version 1.0.0.0 and below 152.0.4191.52 is affected.