Private-event access via unchecked self-invitation
Published Feb 21, 2024 · Updated Aug 27, 2024
Incorrect authorization in Discourse Calendar allows remote authenticated users to access private events through attendance updates. The invitees controller create action checked only whether the requester could see the event post, then created attendance without verifying can_user_update_attendance. Any signed-in user who can see the post can mark attendance and thereby gain access to a private event.
Summary
What happened
Incorrect authorization in Discourse Calendar allows remote authenticated users to access private events through attendance updates. The invitees controller create action checked only whether the requester could see the event post, then created attendance without verifying can_user_update_attendance. Any signed-in user who can see the post can mark attendance and thereby gain access to a private event.
The record
- CVE
- CVE-2024-26145
- Published
- Feb 21, 2024
- Updated
- Aug 27, 2024
- Vendor
- Discourse
- Product
- Discourse Calendar
- Classifications
- CWE-863
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Feb 21, 2024CVE publishedPublication date reported by the CVE source.
- Aug 27, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=>= 2201b254, < dfc4fa15f340189f177a1d1ab2cc94ffed3c1190
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What is affected?
Published CVSS scores
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Attacks
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Public exploit references
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Technologies
Your stack
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Your stack
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