CVE-2026-120235

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    CVE-2026-120235

    Published: 1 Nov 2026Last Modified: 2 Nov 2026

    Summary: ag-ui-protocol ag-ui SSE Parser sse.ts parseSSEStream resource consumption

    Details: A security vulnerability has been detected in ag-ui-protocol ag-ui up to 0.0.58. Affected is the function parseSSEStream of the file sdks/typescript/packages/client/src/transform/sse.ts of the component SSE Parser. The manipulation leads to resource consumption. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is 9e7b2b00bce215bbf731f1e6094f63812527c432. The affected component should be upgraded.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120235.json, https://github.com/ag-ui-protocol/ag-ui/, https://github.com/ag-ui-protocol/ag-ui/commit/9e7b2b00bce215bbf731f1e6094f63812527c432, https://github.com/ag-ui-protocol/ag-ui/issues/2522, https://github.com/ag-ui-protocol/ag-ui/pull/2627, https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30, https://nvd.nist.gov/vuln/detail/CVE-2026-120235, https://vuldb.com/cve/CVE-2026-120235, https://vuldb.com/submit/1015147, https://vuldb.com/vuln/429594, https://vuldb.com/vuln/429594/cti

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 5c72d35bb1ce101135fd19602de3b6df25cf98a4
    Fixed -None

    Affected versions

    0.0.1
    0.0.2
    0.0.3
    0.0.32
    0.0.33
    0.0.34
    0.0.35
    0.0.36
    0.0.38
    0.0.39
    0.0.4
    0.0.40
    0.0.42
    0.0.43
    0.0.44
    0.0.45
    0.0.47
    0.0.5
    0.0.54
    0.0.55
    0.0.57
    0.0.6
    0.0.8

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High