CVE-2026-120236: medium-severity vulnerability in ag-ui-protocol ag-ui
ag-ui-protocol ag-ui Transport Decoder input validation
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 5.3epss 0.3%
A vulnerability was detected in ag-ui-protocol ag-ui up to 0.0.58. Affected by this vulnerability is an unknown functionality of the component Transport Decoder Handler. The manipulation results in improper input validation. The attack may be launched remotely. The exploit is now public and may be used. The patch is identified as 660182b973a44b8eda5484b14b88eb9cc251edc4. It is suggested to upgrade the affected component.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
ag-ui-protocol · ag-uipublic PoCs found — 1
cve_referencegithub.com/ag-ui-protocol/ag-ui/issues/2524unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — ag-ui-protocol ag-ui
In the same product, most dangerous first.
CVE-2026-92363MEDIUMag-ui-protocol ag-ui JSON sse_parser.cpp resource consumptionEPSS 0.5%CVE-2026-92361MEDIUMag-ui-protocol ag-ui SSE Client client.go resource consumptionEPSS 0.5%CVE-2026-92362MEDIUMag-ui-protocol ag-ui SSE Frame sse.rs resource consumptionEPSS 0.5%CVE-2026-120233MEDIUMag-ui-protocol ag-ui HttpAgent http.ts information disclosureEPSS 0.4%CVE-2026-120237MEDIUMag-ui-protocol ag-ui Interrupt expiry index.ts isInterruptExpired resource consumptionEPSS 0.4%CVE-2026-101099MEDIUMag-ui-protocol ag-ui Kotlin Community SDK SseParser.kt exceptional conditionEPSS 0.4%
References
https://github.com/ag-ui-protocol/ag-ui/https://github.com/ag-ui-protocol/ag-ui/commit/660182b973a44b8eda5484b14b88eb9cc251edc4https://github.com/ag-ui-protocol/ag-ui/issues/2524https://github.com/ag-ui-protocol/ag-ui/pull/2774https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30https://vuldb.com/cve/CVE-2026-120236https://vuldb.com/submit/1015178https://vuldb.com/vuln/429595https://vuldb.com/vuln/429595/cti