CVE-2026-120236

ag-ui-protocol ag-ui Transport Decoder input validation

State: Published
Severity: 5.3 Medium
Published: Nov 1, 2026
Updated: Nov 1, 2026
Reserved: Oct 31, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P	VulDB
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
3.0	6.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C	VulDB
2.0	6.5 Medium	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C	VulDB

Weaknesses

CWE-20 Improper Input Validation

Affected Products

Product	Versions
ag-uiag-ui-protocol	0.0.1Affected 0.0.2Affected 0.0.3Affected 0.0.4Affected 0.0.5Affected 0.0.6Affected 0.0.7Affected 0.0.8Affected 0.0.9Affected 0.0.10Affected 0.0.11Affected 0.0.12Affected 0.0.13Affected 0.0.14Affected 0.0.15Affected 0.0.16Affected 0.0.17Affected 0.0.18Affected 0.0.19Affected 0.0.20Affected 0.0.21Affected 0.0.22Affected 0.0.23Affected 0.0.24Affected 0.0.25Affected and 33 more versions

References

VDB-429595 | ag-ui-protocol ag-ui Transport Decoder input validationvdb-entry
VDB-429595 | CTI Indicators (IOB, IOC)signaturepermissions-required
CVE-2026-120236 | CVE Analysis and Reportthird-party-advisory
Submit #1015178 | ag-ui-protocol ag-ui <=0.0.58 CWE-20third-party-advisory
https://github.com/ag-ui-protocol/ag-ui/issues/2524exploitissue-tracking
https://github.com/ag-ui-protocol/ag-ui/pull/2774issue-trackingpatch
https://github.com/ag-ui-protocol/ag-ui/commit/660182b973a44b8eda5484b14b88eb9cc251edc4patch
https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30patch
https://github.com/ag-ui-protocol/ag-ui/product

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