CVE-2026-92359ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy
- 2.3LowCVSS base score
- 0.27%Exploitation in 30 daysEPSS · top 80% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By VulDB
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Low2.3 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X |
| VulDBCNA (assigner) | 3.1 | Low3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C |
| VulDBCNA (assigner) | 3.0 | Low3.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C |
| VulDBCNA (assigner) | 2.0 | Low2.6 | AV:N/AC:H/Au:N/C:P/I:N/A:N/E:ND/RL:OF/RC:C |
| NVDNVD · Deferred | 4.0 | Low2.3 | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.27% · top 80% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 2.3.
Affected products
- affected 0.3.0
- unaffected [email protected]
References
References9
- VDB-405445 | ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy (opens in a new tab)vdb-entrytechnical-description
- VDB-405445 | CTI Indicators (IOB, IOC, IOA) (opens in a new tab)signaturepermissions-required
- CVE-2026-92359 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #934120 | ag-ui-protocol ag-ui 0.3.0 CWE-942 (opens in a new tab)third-party-advisory
- https://github.com/ag-ui-protocol/ag-ui/issues/2433 (opens in a new tab)issue-tracking
- https://github.com/ag-ui-protocol/ag-ui/pull/2492 (opens in a new tab)issue-trackingpatch
- https://github.com/ag-ui-protocol/ag-ui/commit/9b143b9668fa52c2054ede9d34a45ac4b4401089 (opens in a new tab)patch
- https://github.com/ag-ui-protocol/ag-ui/releases/tag/AGUI.Abstractions%400.0.6 (opens in a new tab)patch
- https://github.com/ag-ui-protocol/ag-ui/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-80694 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-92359)Record last updated .