Cross-user conversation access via unchecked identifiers
Published Aug 28, 2026 · Updated Aug 28, 2026
Authorization bypass in VoltAgent through 2.1.20 allows remote authenticated users to access other users’ conversations by ID. Memory API handlers use caller-controlled conversation and user identifiers for lookup, update, and deletion without comparing the resource owner to the authenticated principal. With authentication enabled, any account can read, alter, or delete another user’s conversation data; the default unauthenticated configuration exposes the same operations without credentials.
Summary
What happened
Authorization bypass in VoltAgent through 2.1.20 allows remote authenticated users to access other users’ conversations by ID. Memory API handlers use caller-controlled conversation and user identifiers for lookup, update, and deletion without comparing the resource owner to the authenticated principal. With authentication enabled, any account can read, alter, or delete another user’s conversation data; the default unauthenticated configuration exposes the same operations without credentials.
The record
- CVE
- CVE-2026-82283
- Published
- Aug 28, 2026
- Updated
- Aug 28, 2026
- Vendor
- VoltAgent
- Product
- VoltAgent
- Classifications
- CWE-639, T1213, T1485, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 28, 2026CVE publishedPublication date reported by the CVE source.
- Aug 28, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=2.1.20
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Upstream cross-user memory API reproductionproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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