CVE-2026-123964

Description

A vulnerability was detected in OpenBMB Internet of Agents up to 9d78e88e47160eb42ee1ee8538c05e1c2c47877a. This affects the function launch_goal of the file im_client/communication/communication_layer.py of the component Collaboration Layer. Performing a manipulation of the argument max_turns results in infinite loop. The attack may be initiated remotely. The exploit is now public and may be used. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The project was informed of the problem early through an issue report but has not responded yet.

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:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Effective score: 5.3 / 10 MEDIUM source: CNA overview
CWE(s): CWE-835, CWE-404
Reserved: 2026-11-06
Published: 2026-11-07 12:45 UTC
Last updated: 2026-11-07 12:45 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/123xxx/CVE-2026-123964.json

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-2026-119252

EUVD enrichment is queued; refresh the page in a few seconds.

Affected products (1)

Vendor	Product	Versions	Platforms
OpenBMB	Internet of Agents	`9d78e88e47160eb42ee1ee8538c05e1c2c47877a` (affected)	—

Vendor references (5)

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

VDB-432034 | OpenBMB Internet of Agents Collaboration Layer communication_layer.py launch_goal infinite loop vdb-entrytechnical-description
VDB-432034 | CTI Indicators (IOB, IOC, TTP, IOA) signaturepermissions-required
CVE-2026-123964 | CVE Analysis and Report third-party-advisory
Submit #1033798 | OpenBMB Internet of Agents(IoA) 9d78e88 Excessive Iteration third-party-advisory
https://github.com/OpenBMB/IoA/issues/22 exploitissue-tracking

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.

Remediations (10)

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2026-11-08 11:21 UTC

AI Forensic Analysis

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-123964.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:openbmb:internet_of_agents:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Collaboration Layer"
          ],
          "product": "Internet of Agents",
          "vendor": "OpenBMB",
          "versions": [
            {
              "status": "affected",
              "version": "9d78e88e47160eb42ee1ee8538c05e1c2c47877a"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Evo1ution (VulDB User)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability was detected in OpenBMB Internet of Agents up to 9d78e88e47160eb42ee1ee8538c05e1c2c47877a. This affects the function launch_goal of the file im_client/communication/communication_layer.py of the component Collaboration Layer. Performing a manipulation of the argument max_turns results in infinite loop. The attack may be initiated remotely. The exploit is now public and may be used. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The project was informed of the problem early through an issue report but has not responded yet."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 4,
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-835",
              "description": "Infinite Loop",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-404",
              "description": "Denial of Service",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-07T12:45:20.360Z",
        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
        "shortName": "VulDB"
      },
      "references": [
        {
          "name": "VDB-432034 | OpenBMB Internet of Agents Collaboration Layer communication_layer.py launch_goal infinite loop",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/432034"
        },
        {
          "name": "VDB-432034 | CTI Indicators (IOB, IOC, TTP, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/432034/cti"
        },
        {
          "name": "CVE-2026-123964 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-123964"
        },
        {
          "name": "Submit #1033798 | OpenBMB Internet of Agents(IoA) 9d78e88 Excessive Iteration",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/1033798"
        },
        {
          "tags": [
            "exploit",
            "issue-tracking"
          ],
          "url": "https://github.com/OpenBMB/IoA/issues/22"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-11-06T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-11-06T01:00:00.000Z",
          "value": "VulDB entry created"
        },
        {
          "lang": "en",
          "time": "2026-11-06T18:17:41.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "OpenBMB Internet of Agents Collaboration Layer communication_layer.py launch_goal infinite loop",
      "x_generator": [
        "VulDB PVTS v202611"
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-123964",
    "datePublished": "2026-11-07T12:45:20.360Z",
    "dateReserved": "2026-11-06T17:12:31.038Z",
    "dateUpdated": "2026-11-07T12:45:20.360Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}