Vulnerability-Lookup

GHSA-CXRH-J4JR-QWG3

Vulnerability from github – Published: 2025-05-15 14:15 – Updated: 2026-02-06 21:35

Summary

undici Denial of Service attack via bad certificate data

Details

Impact

Applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak.

Patches

This has been patched in https://github.com/nodejs/undici/pull/4088.

Workarounds

If a webhook fails, avoid keep calling it repeatedly.

References

Reported as: https://github.com/nodejs/undici/issues/3895

Severity

3.1 (Low)


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

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "undici"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.29.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "undici"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.21.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "undici"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.0.0"
            },
            {
              "fixed": "7.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-47279"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-401"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-15T14:15:06Z",
    "nvd_published_at": "2025-05-15T18:15:38Z",
    "severity": "LOW"
  },
  "details": "### Impact\n\nApplications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. \n\n### Patches\n\nThis has been patched in https://github.com/nodejs/undici/pull/4088.\n\n### Workarounds\n\nIf a webhook fails, avoid keep calling it repeatedly.\n\n### References\n\nReported as: https://github.com/nodejs/undici/issues/3895",
  "id": "GHSA-cxrh-j4jr-qwg3",
  "modified": "2026-02-06T21:35:53Z",
  "published": "2025-05-15T14:15:06Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nodejs/undici/security/advisories/GHSA-cxrh-j4jr-qwg3"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47279"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nodejs/undici/issues/3895"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nodejs/undici/pull/4088"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nodejs/undici/commit/f317618ec28753a4218beccea048bcf89c36db25"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nodejs/undici"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "undici Denial of Service attack via bad certificate data"
}

CVE-2025-47279 (GCVE-0-2025-47279)

Vulnerability from cvelistv5 – Published: 2025-05-15 17:16 – Updated: 2026-02-06 19:14

Title

undici Denial of Service attack via bad certificate data

Summary

Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails.

Severity

3.1 (Low)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-15 17:51 UTC

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7565 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/nodejs/undici/security/advisor…	x_refsource_CONFIRM
https://github.com/nodejs/undici/issues/3895	x_refsource_MISC
https://github.com/nodejs/undici/pull/4088	x_refsource_MISC
https://github.com/nodejs/undici/commit/f317618ec…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
nodejs	undici	Affected: < 5.29.0 Affected: >= 6.0.0, < 6.21.2 Affected: >= 7.0.0, < 7.5.0

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-47279",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-15T17:51:54.156281Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-16T13:44:28.438Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "undici",
          "vendor": "nodejs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 5.29.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 6.0.0, \u003c 6.21.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 7.0.0, \u003c 7.5.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Undici is an HTTP/1.1 client for Node.js. Prior to versions 5.29.0, 6.21.2, and 7.5.0, applications that use undici to implement a webhook-like system are vulnerable. If the attacker set up a server with an invalid certificate, and they can force the application to call the webhook repeatedly, then they can cause a memory leak. This has been patched in versions 5.29.0, 6.21.2, and 7.5.0. As a workaound, avoid calling a webhook repeatedly if the webhook fails."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-401",
              "description": "CWE-401: Missing Release of Memory after Effective Lifetime",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      "providerMetadata": {
        "dateUpdated": "2026-02-06T19:14:56.281Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nodejs/undici/security/advisories/GHSA-cxrh-j4jr-qwg3",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nodejs/undici/security/advisories/GHSA-cxrh-j4jr-qwg3"
        },
        {
          "name": "https://github.com/nodejs/undici/issues/3895",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nodejs/undici/issues/3895"
        },
        {
          "name": "https://github.com/nodejs/undici/pull/4088",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nodejs/undici/pull/4088"
        },
        {
          "name": "https://github.com/nodejs/undici/commit/f317618ec28753a4218beccea048bcf89c36db25",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nodejs/undici/commit/f317618ec28753a4218beccea048bcf89c36db25"
        }
      ],
      "source": {
        "advisory": "GHSA-cxrh-j4jr-qwg3",
        "discovery": "UNKNOWN"
      },
      "title": "undici Denial of Service attack via bad certificate data"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-47279",
    "datePublished": "2025-05-15T17:16:02.738Z",
    "dateReserved": "2025-05-05T16:53:10.373Z",
    "dateUpdated": "2026-02-06T19:14:56.281Z",
    "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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Action not permitted

GHSA-CXRH-J4JR-QWG3

Impact

Patches

Workarounds

References

CVE-2025-47279 (GCVE-0-2025-47279)

Tags

Sightings

Nomenclature

Related by attack behaviour