Vulnerability · Published Sep 16, 2026 · Assigned by VulDB

CVE-2026-92363ag-ui-protocol ag-ui JSON sse_parser.cpp resource consumption

Medium 4.3

In plain English

A medium-severity uncontrolled resource consumption 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 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.5%top 54.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A flaw has been found in ag-ui-protocol ag-ui 1.0. Affected is an unknown function of the file src/stream/sse_parser.cpp of the component JSON Parser. Executing a manipulation can lead to resource consumption. The attack may be performed from remote. This patch is called ab6e0bc298996caac2b4b0b3ec0bd8d32a15a186. Applying a patch is advised to resolve this issue.

Affected products (as reported)

Vendor	Product	Versions
ag-ui-protocol	ag-ui	1.0

Weakness: CWE-400, CWE-404 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C

References

VDB-405449 | ag-ui-protocol ag-ui JSON sse_parser.cpp resource consumption vdb-entry
VDB-405449 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-92363 | CVE Analysis and Report third-party-advisory
Submit #934957 | ag-ui-protocol ag-ui v1.0 CWE-400 third-party-advisory
https://github.com/ag-ui-protocol/ag-ui/issues/2440 issue-tracking
https://github.com/ag-ui-protocol/ag-ui/pull/2501 issue-tracking, patch
https://github.com/ag-ui-protocol/ag-ui/commit/ab6e0bc298996caac2b4b0b3ec0bd8d32a15a186 patch
https://github.com/ag-ui-protocol/ag-ui/ product