Information disclosure via prototype-chain path traversal
Published Sep 16, 2026 · Updated Sep 16, 2026
Information disclosure in A2UI 0.8 Model Processor allows remote attackers to resolve inherited properties through crafted JSON Pointer paths. The v0_8 getDataByPath logic reads current[segment] from ordinary objects without verifying that the segment is an own property, so paths can reach Object.prototype values. Exploitation requires an agent-controlled path to enter v0_8 read processing; inherited values can reach bindings or expression evaluation, but no write primitive is reported.
Summary
What happened
Information disclosure in A2UI 0.8 Model Processor allows remote attackers to resolve inherited properties through crafted JSON Pointer paths. The v0_8 getDataByPath logic reads current[segment] from ordinary objects without verifying that the segment is an own property, so paths can reach Object.prototype values. Exploitation requires an agent-controlled path to enter v0_8 read processing; inherited values can reach bindings or expression evaluation, but no write primitive is reported.
The record
- CVE
- CVE-2026-92357
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- Vendor
- A2UI Project
- Product
- A2UI
- Classifications
- CWE-200
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 16, 2026CVE publishedPublication date reported by the CVE source.
- Sep 16, 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=0.8
- Affected versionversion=0.9
- Affected versionversion=1.0
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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