Authenticated avatar overwrite via mismatched user ID types
Published Jan 27, 2026 · Updated Jan 27, 2026
Authorization bypass in Askbot 0.12.2 allows remote authenticated users to replace other users' profile pictures via crafted POST requests. The admin_or_owner_required decorator compares an integer account ID with the string user_id URL parameter, then delegates failed checks to login_required instead of denying access. Any normal account can change the user_id parameter and overwrite another account's avatar; no administrative privileges or user interaction are required.
Summary
What happened
Authorization bypass in Askbot 0.12.2 allows remote authenticated users to replace other users' profile pictures via crafted POST requests. The admin_or_owner_required decorator compares an integer account ID with the string user_id URL parameter, then delegates failed checks to login_required instead of denying access. Any normal account can change the user_id parameter and overwrite another account's avatar; no administrative privileges or user interaction are required.
The record
- CVE
- CVE-2026-1213
- Published
- Jan 27, 2026
- Updated
- Jan 27, 2026
- Vendor
- Askbot
- Product
- Askbot
- Classifications
- CWE-639, CAPEC-180, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 27, 2026CVE publishedPublication date reported by the CVE source.
- Jan 27, 2026Record 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=0.12.2
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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