Vulnerability-Lookup

GHSA-3MM7-4JH6-P5GF

Vulnerability from github – Published: 2026-09-28 18:31 – Updated: 2026-09-28 18:31

Details

A flaw has been found in ag-ui-protocol ag-ui up to 2026-09-07. This vulnerability affects the function FilterToolCallsMiddleware of the file sdks/typescript/packages/client/src/middleware/filter-tool-calls.ts of the component Middleware. Executing a manipulation can lead to incomplete cleanup. The attack may be launched remotely. Upgrading to version 2026-09-08 is able to resolve this issue. This patch is called c346119fe870b70f5c19738ee5119f3e1456e59d. It is suggested to upgrade the affected component.

Severity

5.4 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

5.3 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-101100"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-459"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-28T18:17:16Z",
    "severity": "MODERATE"
  },
  "details": "A flaw has been found in ag-ui-protocol ag-ui up to 2026-09-07. This vulnerability affects the function FilterToolCallsMiddleware of the file sdks/typescript/packages/client/src/middleware/filter-tool-calls.ts of the component Middleware. Executing a manipulation can lead to incomplete cleanup. The attack may be launched remotely. Upgrading to version 2026-09-08 is able to resolve this issue. This patch is called c346119fe870b70f5c19738ee5119f3e1456e59d. It is suggested to upgrade the affected component.",
  "id": "GHSA-3mm7-4jh6-p5gf",
  "modified": "2026-09-28T18:31:26Z",
  "published": "2026-09-28T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101100"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ag-ui-protocol/ag-ui/issues/2443"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ag-ui-protocol/ag-ui/pull/2494"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ag-ui-protocol/ag-ui/commit/c346119fe870b70f5c19738ee5119f3e1456e59d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ag-ui-protocol/ag-ui"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-101100"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/934980"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/410975"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/410975/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-101100 (GCVE-0-2026-101100)

Vulnerability from cvelistv5 – Published: 2026-09-28 17:30 – Updated: 2026-09-28 17:47 X_Open Source

Title

ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup

Summary

Severity

5.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

5.4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C

5.4 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-28 17:47 UTC

CWE

CWE-459 - Incomplete Cleanup

Assigner

VulDB mitre root

References

9 references

URL	Tags
https://vuldb.com/vuln/410975	vdb-entrytechnical-description
https://vuldb.com/vuln/410975/cti	signaturepermissions-required
https://vuldb.com/cve/CVE-2026-101100	third-party-advisory
https://vuldb.com/submit/934980	third-party-advisory
https://github.com/ag-ui-protocol/ag-ui/issues/2443	issue-tracking
https://github.com/ag-ui-protocol/ag-ui/pull/2494	issue-trackingpatch
https://github.com/ag-ui-protocol/ag-ui/commit/c3…	patch
https://github.com/ag-ui-protocol/ag-ui/releases/…	patch
https://github.com/ag-ui-protocol/ag-ui/	product

Impacted products

1 product

Vendor	Product	Version
ag-ui-protocol	ag-ui	Affected: 2026-09-07 Unaffected: 2026-09-08 cpe:2.3:a:ag-ui-protocol:ag-ui::::::::

Credits

meraklbz (VulDB User)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-101100",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-28T17:47:46.613540Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-28T17:47:55.078Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "Middleware"
          ],
          "product": "ag-ui",
          "vendor": "ag-ui-protocol",
          "versions": [
            {
              "status": "affected",
              "version": "2026-09-07"
            },
            {
              "status": "unaffected",
              "version": "2026-09-08"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "meraklbz (VulDB User)"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A flaw has been found in ag-ui-protocol ag-ui up to 2026-09-07. This vulnerability affects the function FilterToolCallsMiddleware of the file sdks/typescript/packages/client/src/middleware/filter-tool-calls.ts of the component Middleware. Executing a manipulation can lead to incomplete cleanup. The attack may be launched remotely. Upgrading to version 2026-09-08 is able to resolve this issue. This patch is called c346119fe870b70f5c19738ee5119f3e1456e59d. It is suggested to upgrade the affected component."
        }
      ],
      "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:L/VA:L/SC:N/SI:N/SA:N/E:X",
            "version": "4.0"
          }
        },
        {
          "cvssV3_1": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C",
            "version": "3.1"
          }
        },
        {
          "cvssV3_0": {
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C",
            "version": "3.0"
          }
        },
        {
          "cvssV2_0": {
            "baseScore": 5.5,
            "vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C",
            "version": "2.0"
          }
        }
      ],
      "problemTypes": [
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          "descriptions": [
            {
              "cweId": "CWE-459",
              "description": "Incomplete Cleanup",
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              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-09-28T17:30:15.988Z",
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      },
      "references": [
        {
          "name": "VDB-410975 | ag-ui-protocol ag-ui Middleware filter-tool-calls.ts FilterToolCallsMiddleware cleanup",
          "tags": [
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://vuldb.com/vuln/410975"
        },
        {
          "name": "VDB-410975 | CTI Indicators (IOB, IOC, IOA)",
          "tags": [
            "signature",
            "permissions-required"
          ],
          "url": "https://vuldb.com/vuln/410975/cti"
        },
        {
          "name": "CVE-2026-101100 | CVE Analysis and Report",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/cve/CVE-2026-101100"
        },
        {
          "name": "Submit #934980 | ag-ui-protocol ag-ui v1.0 CWE-459",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://vuldb.com/submit/934980"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/ag-ui-protocol/ag-ui/issues/2443"
        },
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          "tags": [
            "issue-tracking",
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          "url": "https://github.com/ag-ui-protocol/ag-ui/pull/2494"
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          "url": "https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-09-08"
        },
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          "tags": [
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          "url": "https://github.com/ag-ui-protocol/ag-ui/"
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      "tags": [
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          "time": "2026-09-08T00:00:00.000Z",
          "value": "Countermeasure disclosed"
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          "lang": "en",
          "time": "2026-09-28T00:00:00.000Z",
          "value": "Advisory disclosed"
        },
        {
          "lang": "en",
          "time": "2026-09-28T02:00:00.000Z",
          "value": "VulDB entry created"
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        {
          "lang": "en",
          "time": "2026-09-28T04:58:57.000Z",
          "value": "VulDB entry last update"
        }
      ],
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      "x_generator": [
        "VulDB PVTS v202609"
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  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-101100",
    "datePublished": "2026-09-28T17:30:15.988Z",
    "dateReserved": "2026-09-28T02:53:37.761Z",
    "dateUpdated": "2026-09-28T17:47:55.078Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-3MM7-4JH6-P5GF

CVE-2026-101100 (GCVE-0-2026-101100)

Tags

Sightings

Nomenclature

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