Improper input validation in Ag-Ui-Protocol Ag-Ui
CVE-2026-120236
A vulnerability was detected in ag-ui-protocol ag-ui up to 0.0.58. Affected by this vulnerability is an unknown functionality of the component Transport Decoder Handler. The manipulation results in improper input validation. The attack may be launched remotely. The exploit is now public and may be used. The patch is identified as 660182b973a44b8eda5484b14b88eb9cc251edc4. It is suggested to upgrade the affected component.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Ag-Ui-Protocol Ag-Ui — versions 0.0.1, 0.0.10, 0.0.11
Weakness classification (CWE)
References
- vuldb.com/vuln/429595 (vdb-entry)
- vuldb.com/vuln/429595/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-120236 (third-party-advisory)
- vuldb.com/submit/1015178 (third-party-advisory)
- github.com/ag-ui-protocol/ag-ui/issues/2524 (issue-tracking, exploit)
- github.com/ag-ui-protocol/ag-ui/pull/2774 (issue-tracking, patch)
- github.com/ag-ui-protocol/ag-ui/commit/660182b973a44b8eda5484b14b88eb9cc251edc4 (patch)
- github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30 (patch)
- github.com/ag-ui-protocol/ag-ui/ (product)
Frequently asked questions
- What is CVE-2026-120236?
- CVE-2026-120236 is a medium-severity vulnerability in Ag-Ui-Protocol Ag-Ui, classified under Improper Input Validation. CVSS score: 6.3/10. Published 2026-11-01.
- How severe is CVE-2026-120236?
- Medium severity. CVSS v3 base score is 6.3 out of 10.