Quick answers
- Is CVE-2026-92361 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-92361 being exploited in the wild.
- How severe is CVE-2026-92361?
- Medium severity, with a CVSS score of 4.3, published 16 September 2026.
- Which products and versions are affected?
- Ag-Ui-Protocol Ag-Ui 1.0.
- Is there a fix for CVE-2026-92361?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-92361 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-92361?
- Check whether you run Ag-Ui-Protocol Ag-Ui at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an uncontrolled resource consumption flaw (CWE-400) in the SSE Client component (sdks/community/go/pkg/client/sse/client.go, lines 191–303). The SSE client appends incoming event data, event lines, and id lines without enforcing per-item or total-size limits, causing unbounded memory growth during a single stream connection. An attacker controlling a malicious or compromised agent endpoint can trigger memory exhaustion on any client connecting to it via SSE. The attack requires network reachability to the agent endpoint but no authentication. A fix awaits acceptance in a pending pull request; remediation options include implementing per-event size caps, per-id length caps, and total stream budgets as used in the reference Dart SDK implementation.
Affected products
- AG-UI Protocol ag-ui 1.0
Timeline
- 2026-08-18: disclosed: Issue reported on GitHub
- 2026-09-16: advisory: CVE-2026-92361 published
- 2026-09-16: other: Patch pending acceptance