CVEsag-ui-protocolCVE-2026-120235Published Nov 1, 16:00 · Updated Nov 1, 16:00 UTC
4.3
MediumCVSS 3.1 · from VulDB
CVE-2026-120235

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

ag-ui · Uncontrolled resource use · CWE-400
Affectedag-ui
FixA patch is linked in the references.
PublishedNov 1, 16:00 · VulDB
ScoredNov 1 · 4.3 · VulDB
Exploit code publicNone known · checked 23:18 UTC
ExploitedNone known · CISA KEV checked 23:19 UTC

What we know

No known exploitation. CISA KEV, checked 23:19 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 23:18 UTC.
An attacker needs network access and an account. CVSS: network, low privileges.

Description

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.

From VulDB

Affected and fixed versions

ProductAffectedFixed inag-ui0.0.1–ag-ui0.0.2–ag-ui0.0.3–ag-ui0.0.4–ag-ui0.0.5–ag-ui0.0.6–ag-ui0.0.7–ag-ui0.0.8–ag-ui0.0.9–ag-ui0.0.10–ag-ui0.0.11–ag-ui0.0.12–ag-ui0.0.13–ag-ui0.0.14–ag-ui0.0.15–ag-ui0.0.16–ag-ui0.0.17–ag-ui0.0.18–ag-ui0.0.19–ag-ui0.0.20–

Exploit code

Exploit-DBnone knownMetasploitnone knownNucleinone known

References

VDB-429594 | ag-ui-protocol ag-ui SSE Parser sse.ts parseSSEStream resource consumption · vuldb.comvdb entrytechnical descriptionVDB-429594 | CTI Indicators (IOB, IOC, TTP, IOA) · vuldb.comsignaturepermissions requiredCVE-2026-120235 | CVE Analysis and Report · vuldb.comthird party advisorySubmit #1015147 | ag-ui-protocol ag-ui <=0.0.58 CWE-400 · vuldb.comthird party advisorygithub.com/ag-ui-protocol/ag-ui/issues/2522 · github.comexploitissue trackinggithub.com/ag-ui-protocol/ag-ui/pull/2627 · github.comissue trackingpatchgithub.com/ag-ui-protocol/ag-ui/commit/9e7b2b00bce215bbf731f1e6094f63812527c432 · github.compatchgithub.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30 · github.compatchgithub.com/ag-ui-protocol/ag-ui/ · github.comproduct

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