CVE-2026-92359 ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy
An attacker can bypass cross-domain restrictions due to permissive CORS policies in the ag-ui-protocol library, potentially enabling unauthorized cross-origin requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-92359?
CVE-2026-92359 is a low-severity vulnerability in ag-ui-protocol ag-ui, published on 16 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A security flaw has been discovered in ag-ui-protocol ag-ui 0.3.0. The affected element is the function create_strands_app of the file integrations/aws-strands/python/src/ag_ui_strands/utils.py of the component CORSMiddleware. The manipulation results in permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is described as difficult. Upgrading to version [email protected] is sufficient to fix this issue. The patch is identified as 9b143b9668fa52c2054ede9d34a45ac4b4401089. It is suggested to upgrade the affected component.
Which versions are affected by CVE-2026-92359?
How do I fix CVE-2026-92359?
No fix has been published for CVE-2026-92359 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-92359 being exploited?
There is no known exploitation of CVE-2026-92359 in the wild and no public exploit code.
Sources
Also known as GHSA-fq29-84pr-2m3x.