CVE-2026-120236

MEDIUM 6.3

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

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-20
Vendor	ag-ui-protocol
Product	ag-ui
Published	Nov 1, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

ag-ui-protocol / ag-ui

0.0.1 0.0.2 0.0.3 0.0.4 0.0.5 0.0.6 0.0.7 0.0.8 0.0.9 0.0.10 0.0.11 0.0.12 0.0.13 0.0.14 0.0.15 0.0.16 0.0.17 0.0.18 0.0.19 0.0.20 0.0.21 0.0.22 0.0.23 0.0.24 0.0.25 0.0.26 0.0.27 0.0.28 0.0.29 0.0.30 0.0.31 0.0.32 0.0.33 0.0.34 0.0.35 0.0.36 0.0.37 0.0.38 0.0.39 0.0.40 0.0.41 0.0.42 0.0.43 0.0.44 0.0.45 0.0.46 0.0.47 0.0.48 0.0.49 0.0.50 0.0.51 0.0.52 0.0.53 0.0.54 0.0.55 0.0.56 0.0.57 0.0.58

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/429595 vuldb.com: https://vuldb.com/vuln/429595/cti vuldb.com: https://vuldb.com/cve/CVE-2026-120236 vuldb.com: https://vuldb.com/submit/1015178 github.com: https://github.com/ag-ui-protocol/ag-ui/issues/2524 github.com: https://github.com/ag-ui-protocol/ag-ui/pull/2774 github.com: https://github.com/ag-ui-protocol/ag-ui/commit/660182b973a44b8eda5484b14b88eb9cc251edc4 github.com: https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30 github.com: https://github.com/ag-ui-protocol/ag-ui/

Credits

🔍 ez-lbz (VulDB User)