Vulnerability · Published Sep 28, 2026 · Assigned by VulDB
CVE-2026-101099ag-ui-protocol ag-ui Kotlin Community SDK SseParser.kt exceptional condition
Medium 4.3
In plain English
A medium-severity security flaw in ag-ui from ag-ui-protocol. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.4%top 66.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ag-ui-protocol | ag-ui | 2026-09-23 |
Weakness: CWE-755 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:C
References
- VDB-410974 | ag-ui-protocol ag-ui Kotlin Community SDK SseParser.kt exceptional condition vdb-entry
- VDB-410974 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-101099 | CVE Analysis and Report third-party-advisory
- Submit #934974 | ag-ui-protocol ag-ui v1.0 CWE-755 third-party-advisory
- https://github.com/ag-ui-protocol/ag-ui/issues/2442 issue-tracking
- https://github.com/ag-ui-protocol/ag-ui/pull/2657 issue-tracking, patch
- https://github.com/ag-ui-protocol/ag-ui/ product