CVE-2026-92360CWE-345CWE-346

CVE-2026-92360

Medium · published September 16, 2026

CVSS v3.1
6.3
EPSS
0%
Percentile
10.4
In the wild
Unconfirmed
What it is

A weakness has been identified in ag-ui-protocol ag-ui 1.0. The impacted element is the function prepareRunAgentInput of the file agent/agent.ts of the component Event Application Layer. This manipulation of the argument TEXT_MESSAGE_START causes origin validation error. Remote exploitation of the attack is possible. The pull request to fix this issue awaits acceptance.

The record
Technical detail
CVSS v3.1
6.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
5.3 · 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:X
EPSS
0.00208 · 10.4th percentile
Weaknesses
CWE-345 · Insufficient Verification of Data Authenticity; CWE-346 · Origin Validation Error
Published
2026-09-16T17:18Z
References (7)
https://github.com/ag-ui-protocol/ag-ui/ · [email protected]https://github.com/ag-ui-protocol/ag-ui/issues/2437 · [email protected]https://github.com/ag-ui-protocol/ag-ui/pull/2701 · [email protected]https://vuldb.com/cve/CVE-2026-92360 · [email protected]https://vuldb.com/submit/934950 · [email protected]https://vuldb.com/vuln/405446 · [email protected]https://vuldb.com/vuln/405446/cti · [email protected]
EPSS history
Timeline
  • 18 SEP 04:02Z
    EPSS moved — → 0%
    epss
  • 16 SEP 12:30Z
    ag-ui-protocol ag-ui Event Application Layer agent.ts prepareRunAgentInput origin validation
    cvelistv5