Vulnerability in Ag-Ui-Protocol Ag-Ui
CVE-2026-101099
A vulnerability was detected in ag-ui-protocol ag-ui up to 2026-09-23. This affects an unknown part of the file SseParser.kt of the component Kotlin Community SDK. Performing a manipulation results in handling of exceptional conditions. The attack may be initiated remotely. The pull request to fix this issue awaits acceptance.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
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 2026-09-23
Weakness classification (CWE)
References
- vuldb.com/vuln/410974 (vdb-entry)
- vuldb.com/vuln/410974/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-101099 (third-party-advisory)
- vuldb.com/submit/934974 (third-party-advisory)
- github.com/ag-ui-protocol/ag-ui/issues/2442 (issue-tracking)
- github.com/ag-ui-protocol/ag-ui/pull/2657 (issue-tracking, patch)
- github.com/ag-ui-protocol/ag-ui/ (product)
Frequently asked questions
- What is CVE-2026-101099?
- CVE-2026-101099 is a medium-severity vulnerability in Ag-Ui-Protocol Ag-Ui, classified under Improper Handling of Exceptional Conditions. CVSS score: 4.3/10. Published 2026-09-28.
- How severe is CVE-2026-101099?
- Medium severity. CVSS v3 base score is 4.3 out of 10.