CVE-2026-101101

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{"bugzilla": {"description": "ag-ui: ag-ui: Denial of Service via uncaught JSON parsing exception", "id": "2542598", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2542598"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-248", "details": ["A vulnerability has been found in ag-ui-protocol ag-ui up to 2026-09-07. This issue affects the function JSON.parse of the file legacy/convert.ts of the component Middleware. The manipulation leads to uncaught exception. Remote exploitation of the attack is possible. Upgrading to version 2026-09-08 is capable of addressing this issue. The identifier of the patch is 30f8c794d5b73df5c610153043db502b2cc106cc. Upgrading the affected component is recommended.", "A flaw was found in ag-ui. A remote authenticated attacker can trigger an uncaught exception during JSON parsing by submitting malformed input to the middleware component. This failure can cause the application to crash unexpectedly, resulting in a Denial of Service (DoS)."], "mitigation": {"lang": "en:us", "value": "Restrict network access or revoke privileges for untrusted authenticated users accessing the middleware endpoint. Additionally, deploy request-filtering proxies to validate or reject malformed JSON payloads prior to reaching the application middleware."}, "name": "CVE-2026-101101", "package_state": [{"cpe": "cpe:/a:redhat:hummingbird:1", "fix_state": "Affected", "package_name": "jaeger", "product_name": "Red Hat Hardened Images"}], "public_date": "2026-09-28T17:45:11Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-101101\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-101101\nhttps://github.com/ag-ui-protocol/ag-ui/\nhttps://github.com/ag-ui-protocol/ag-ui/commit/30f8c794d5b73df5c610153043db502b2cc106cc\nhttps://github.com/ag-ui-protocol/ag-ui/issues/2444\nhttps://github.com/ag-ui-protocol/ag-ui/pull/2493\nhttps://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08\nhttps://vuldb.com/cve/CVE-2026-101101\nhttps://vuldb.com/submit/934981\nhttps://vuldb.com/vuln/410976\nhttps://vuldb.com/vuln/410976/cti"], "statement": "A flaw was found in ag-ui within the middleware JSON parsing component (`legacy/convert.ts`). A remote authenticated attacker can submit malformed JSON input, triggering an uncaught exception during `JSON.parse`. This causes the process to crash unexpectedly, resulting in a Denial of Service (DoS). Default container execution controls and service managers may mitigate impact by automatically restarting the affected service process.", "threat_severity": "Moderate"}

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