Information disclosure in Ag-Ui-Protocol Ag-Ui
CVE-2026-120233
A security flaw has been discovered in ag-ui-protocol ag-ui up to 0.0.58. This affects an unknown function of the file sdks/typescript/packages/client/src/agent/http.ts of the component HttpAgent. Performing a manipulation results in information disclosure. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.
Vulnerability class: Information Disclosure
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Ag-Ui-Protocol Ag-Ui — versions 0.0.1, 0.0.10, 0.0.11
Weakness classification (CWE)
References
- vuldb.com/vuln/429592 (vdb-entry)
- vuldb.com/vuln/429592/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-120233 (third-party-advisory)
- vuldb.com/submit/1015143 (third-party-advisory)
- github.com/ag-ui-protocol/ag-ui/issues/2520 (issue-tracking, exploit)
- github.com/ag-ui-protocol/ag-ui/pull/2575 (issue-tracking, patch)
- github.com/ag-ui-protocol/ag-ui/ (product)
Frequently asked questions
- What is CVE-2026-120233?
- CVE-2026-120233 is a medium-severity vulnerability in Ag-Ui-Protocol Ag-Ui, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-11-01.
- How severe is CVE-2026-120233?
- Medium severity. CVSS v3 base score is 5.3 out of 10.