Information disclosure after user interaction
Published Jan 22, 2026 · Updated Jan 22, 2026
Input-validation failure in Microsoft 365 Copilot allows remote attackers to disclose information over a network after user interaction. Microsoft has not published the affected Copilot component, the rejected input type, or how malformed input crosses the validation boundary. Exploitation requires user interaction, but the affected data and required user action remain undisclosed.
Summary
What happened
Input-validation failure in Microsoft 365 Copilot allows remote attackers to disclose information over a network after user interaction. Microsoft has not published the affected Copilot component, the rejected input type, or how malformed input crosses the validation boundary. Exploitation requires user interaction, but the affected data and required user action remain undisclosed.
The record
- CVE
- CVE-2026-24307
- Published
- Jan 22, 2026
- Updated
- Jan 22, 2026
- Vendor
- Microsoft
- Product
- Microsoft 365 Copilot
- Classifications
- CWE-1287
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 22, 2026CVE publishedPublication date reported by the CVE source.
- Jan 22, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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- Affected versionversion=-
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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