CVE-2026-120236

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.

Overview

State: PUBLISHED
Assigner (CNA): VulDB
CVSS severity: MEDIUM
CVSS score: 5.3 / 10
CVSS vector: 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
Effective score: 5.3 / 10 MEDIUM source: CNA overview
CWE(s): CWE-20
Reserved: 2026-10-31
Published: 2026-11-01 16:45 UTC
Last updated: 2026-11-01 16:45 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/120xxx/CVE-2026-120236.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published: 2026-11-01 17:16:33 UTC
NVD last modified: 2026-11-01 17:16:33 UTC
NVD CVSS v3.1: 6.3 / 10 MEDIUM source: cna@vuldb.com
NVD CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Exploitability subscore: 2.8 / 10
Impact subscore: 3.4 / 10

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID: EUVD-2026-114875
Assigner: VulDB
Published: Nov 1, 2026, 4:45:17 PM
Updated: Nov 1, 2026, 4:45:17 PM
EUVD base score (CVSS 4.0): 5.3 / 10
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
EUVD-reported EPSS: 0.0000
Vendors: ag-ui-protocol
Products: ag-ui (0.0.28)

ag-ui (0.0.22)

ag-ui (0.0.24)

ag-ui (0.0.7)

ag-ui (0.0.36)

ag-ui (0.0.21)

ag-ui (0.0.3)

ag-ui (0.0.29)

ag-ui (0.0.13)

ag-ui (0.0.54)

ag-ui (0.0.14)

ag-ui (0.0.6)

ag-ui (0.0.8)

ag-ui (0.0.18)

ag-ui (0.0.12)

ag-ui (0.0.53)

ag-ui (0.0.16)

ag-ui (0.0.1)

ag-ui (0.0.46)

ag-ui (0.0.11)

ag-ui (0.0.47)

ag-ui (0.0.26)

ag-ui (0.0.19)

ag-ui (0.0.39)

ag-ui (0.0.25)

ag-ui (0.0.45)

ag-ui (0.0.51)

ag-ui (0.0.30)

ag-ui (0.0.42)

ag-ui (0.0.40)

ag-ui (0.0.4)

ag-ui (0.0.52)

ag-ui (0.0.23)

ag-ui (0.0.10)

ag-ui (0.0.32)

ag-ui (0.0.43)

ag-ui (0.0.20)

ag-ui (0.0.49)

ag-ui (0.0.31)

ag-ui (0.0.56)

ag-ui (0.0.27)

ag-ui (0.0.33)

ag-ui (0.0.55)

ag-ui (0.0.5)

ag-ui (0.0.37)

ag-ui (0.0.44)

ag-ui (0.0.58)

ag-ui (0.0.17)

ag-ui (0.0.38)

ag-ui (0.0.2)

ag-ui (0.0.9)

ag-ui (0.0.57)

ag-ui (0.0.41)

ag-ui (0.0.50)

ag-ui (0.0.34)

ag-ui (0.0.15)

ag-ui (0.0.48)

ag-ui (0.0.35)
Aliases: GHSA-42cj-2xxr-4gv8

ENISA 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.

EUVD references (9)

Affected products (1)

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

Vendor references (9)

References embedded in the original CVE record by the assigning CNA.

VDB-429595 | ag-ui-protocol ag-ui Transport Decoder input validation vdb-entry
VDB-429595 | CTI Indicators (IOB, IOC) signaturepermissions-required
CVE-2026-120236 | CVE Analysis and Report third-party-advisory
Submit #1015178 | ag-ui-protocol ag-ui <=0.0.58 CWE-20 third-party-advisory
https://github.com/ag-ui-protocol/ag-ui/issues/2524 exploitissue-tracking
https://github.com/ag-ui-protocol/ag-ui/pull/2774 issue-trackingpatch
https://github.com/ag-ui-protocol/ag-ui/commit/660182b973a44b8eda5484b14b88eb9cc251edc4 patch
https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30 patch
https://github.com/ag-ui-protocol/ag-ui/ product

MITRE references (9) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

https://github.com/ag-ui-protocol/ag-ui/ product
https://github.com/ag-ui-protocol/ag-ui/commit/660182b973a44b8eda5484b14b88eb9cc251edc4 patch
https://github.com/ag-ui-protocol/ag-ui/issues/2524 exploit, issue-tracking
https://github.com/ag-ui-protocol/ag-ui/pull/2774 issue-tracking, patch
https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30 patch
CVE-2026-120236 | CVE Analysis and Report third-party-advisory
Submit #1015178 | ag-ui-protocol ag-ui <=0.0.58 CWE-20 third-party-advisory
VDB-429595 | ag-ui-protocol ag-ui Transport Decoder input validation vdb-entry
VDB-429595 | CTI Indicators (IOB, IOC) signature, permissions-required

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

NVD-tagged references (9)

Reference list NVD curates from the CNA record, vendor advisories, and third-party reports. The tag chips below are NVD's analyst-assigned categories.

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

Remediations (10)

October 2026 Critical Patch Update Released | security

web:blogs.oracle.com

For more information about the Critical Patch Update program, see the security vulnerability remediation practices page located on the Oracle Trust Center.

2026-11-02 13:22 UTC
Patch Notes Version 2.04.02 (All Platforms Hotfix)

web:crimsondesert.pearlabyss.com

Fellow Greymanes, Here are the fixes and improvements that have been added this patch . Update ScheduleThe patch is rolling out across all platforms. Please refer to the Update section below to see the state of the patch for each platform. UpdateSteam (PC): Patch available now Steam (Mac): Patch ...

2026-11-02 13:22 UTC
Patch

web:dashboard.patch.io

Access your Patch account by logging in.

2026-11-02 13:22 UTC
Pennsylvania Access To Criminal History - Home - pa

web:epatch.pa.gov

Why does PATCH exist? Its purpose is to better enable the public to obtain criminal history record checks. The repository was created and is maintained in accordance with Pennsylvania's Criminal History Information Act contained in Chapter 91 of Title 18, Crimes Code. This Act also directs the Pennsylvania State Police (PSP) to disseminate criminal history data to criminal justice agencies ...

2026-11-02 13:22 UTC
Cisco Meraki Security Hardening Release: October 2026

web:sec.cloudapps.cisco.com

As part of Cisco's ongoing commitment to proactive security and product quality, engineering teams conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. These vulnerabilities were found during internal testing and are not known to be actively exploited. To assist customers in patching ...

2026-11-02 13:22 UTC
ArcGIS Server Security 2026 Update 3 Patch - Esri Support

web:support.esri.com

This patch deals specifically with the issues listed below under Issues addressed with this patch . As part of the patch installation, the ArcGIS Server service is stopped and restarted. The restart may take several minutes depending on the number of services published on the ArcGIS Server site. This patch can be uninstalled as outlined in the Uninstalling this patch on Windows and Uninstalling ...

2026-11-02 13:22 UTC
October 2026 Patch Tuesday | Ivanti

web:www.ivanti.com

Microsoft's October Patch Tuesday resolved 1,407 CVEs , including 78 Critical fixes. Priority focus: actively exploited Windows Shell zero-day CVE - 2026 -96951. Also address publicly disclosed CVE - 2026 -108398 and secure edge devices (NetScaler, FortiMail, Ivanti) against ongoing attacks.

2026-11-02 13:22 UTC
Patch now: PHP2Shell, Brotli, and eMudhra guidance for customers

web:www.microsoft.com

Resources you patch manually: nothing is installed automatically for you. Apply the updates now, starting with internet-facing systems, and then restart or reimage. Software you installed or bundled: you update it no matter how you patch . Rebuild and redeploy containers and custom images.

2026-11-02 13:22 UTC
Text Form of Oracle CPU October 2026 Risk Matrices

web:www.oracle.com

Text Form of Oracle Critical Patch Update - October 2026 Risk Matrices This document provides the text form of the October 2026 Advisory Risk Matrices. Please note that the CVE IDs in this document correspond to the same CVE IDs in the October 2026 Advisory. This page contains the following text format Risk Matrices: Oracle Database Server ...

2026-11-02 13:22 UTC
KB4951: Vulnerabilities Resolved in Veeam ONE 13.1 Patch 1

web:www.veeam.com

Vulnerabilities Resolved in Veeam ONE 13.1 Patch 1 Veeam® is committed to ensuring its products protect customers from potential risks. As part of that commitment, we operate a Vulnerability Disclosure Program (VDP) for all Veeam products and perform extensive internal code audits. When a vulnerability is identified, our team promptly develops a patch to address and mitigate the risk. In line ...

2026-11-02 13:22 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-120236.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*"
          ],
          "modules": [
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          ],
          "product": "ag-ui",
          "vendor": "ag-ui-protocol",
          "versions": [
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            },
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      },
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          "tags": [
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        },
        {
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          "tags": [
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            "permissions-required"
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          "url": "https://vuldb.com/vuln/429595/cti"
        },
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        },
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        },
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      "tags": [
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      "timeline": [
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          "time": "2026-10-31T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
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          "time": "2026-10-31T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-10-31T21:16:11.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "ag-ui-protocol ag-ui Transport Decoder input validation",
      "x_generator": [
        "VulDB PVTS v202611"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-120236",
    "datePublished": "2026-11-01T16:45:17.616Z",
    "dateReserved": "2026-10-31T20:10:47.004Z",
    "dateUpdated": "2026-11-01T16:45:17.616Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}