| Title | a2ui-project a2ui v1.0 CWE-200 |
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| Description | The v0_8 model processor resolves JSON Pointer reads by walking plain objects (current[segment], model-processor.ts:356-377). Properties inherited through the prototype chain (e.g. Object.prototype built-ins) are therefore reachable by agent-supplied paths.
Notes on scope:
The v0_8 write path is Map-based and unaffected.
The v0_9 path rejects dangerous keys (__proto__/constructor/prototype) after unescaping. |
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| Source | ⚠️ https://github.com/a2ui-project/a2ui/issues/2299 |
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| User | colorfullbz (UID 86308) |
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| Submission | 08/17/2026 15:36 (30 days ago) |
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| Moderation | 09/16/2026 07:19 (30 days later) |
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| Status | Accepted |
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| VulDB entry | 405444 [a2ui-project a2ui 0.8/0.9/1.0 Model Processor model-processor.ts current[segment] information disclosure] |
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| Points | 20 |
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