Vulnerability-Lookup

GHSA-G5HG-P3PH-G8QG

Vulnerability from github – Published: 2025-06-05 01:09 – Updated: 2025-06-05 01:09

Summary

Multer vulnerable to Denial of Service via unhandled exception

Details

Impact

A vulnerability in Multer versions >=1.4.4-lts.1, <2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process.

Patches

Users should upgrade to 2.0.1

Workarounds

None

References

https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9 https://github.com/expressjs/multer/issues/1233 https://github.com/expressjs/multer/pull/1256

Severity

8.7 (High)


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

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "multer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.4.4-lts.1"
            },
            {
              "fixed": "2.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-48997"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-248"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-06-05T01:09:35Z",
    "nvd_published_at": "2025-06-03T19:15:39Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nA vulnerability in Multer versions \u003e=1.4.4-lts.1, \u003c2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process.\n\n### Patches\n\nUsers should upgrade to `2.0.1`\n\n### Workarounds\n\nNone\n\n### References\n\nhttps://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9\nhttps://github.com/expressjs/multer/issues/1233\nhttps://github.com/expressjs/multer/pull/1256",
  "id": "GHSA-g5hg-p3ph-g8qg",
  "modified": "2025-06-05T01:09:35Z",
  "published": "2025-06-05T01:09:35Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-48997"
    },
    {
      "type": "WEB",
      "url": "https://github.com/expressjs/multer/issues/1233"
    },
    {
      "type": "WEB",
      "url": "https://github.com/expressjs/multer/pull/1256"
    },
    {
      "type": "WEB",
      "url": "https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/expressjs/multer"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Multer vulnerable to Denial of Service via unhandled exception"
}

CVE-2025-48997 (GCVE-0-2025-48997)

Vulnerability from cvelistv5 – Published: 2025-06-03 18:21 – Updated: 2025-06-03 18:30

Title

Multer vulnerable to Denial of Service via unhandled exception

Summary

Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to `2.0.1` to receive a patch. No known workarounds are available.

Severity

8.7 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-03 18:29 UTC

CWE

CWE-248 - Uncaught Exception

Assigner

GitHub_M mitre root

References

4 references

URL	Tags
https://github.com/expressjs/multer/security/advi…	x_refsource_CONFIRM
https://github.com/expressjs/multer/issues/1233	x_refsource_MISC
https://github.com/expressjs/multer/pull/1256	x_refsource_MISC
https://github.com/expressjs/multer/commit/35a327…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
expressjs	multer	Affected: >= 1.4.4-lts.1, < 2.0.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-48997",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-06-03T18:29:57.580368Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-03T18:30:13.178Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "multer",
          "vendor": "expressjs",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.4.4-lts.1, \u003c 2.0.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to `2.0.1` to receive a patch. No known workarounds are available."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.7,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "NONE"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-248",
              "description": "CWE-248: Uncaught Exception",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-06-03T18:21:59.527Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg"
        },
        {
          "name": "https://github.com/expressjs/multer/issues/1233",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/expressjs/multer/issues/1233"
        },
        {
          "name": "https://github.com/expressjs/multer/pull/1256",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/expressjs/multer/pull/1256"
        },
        {
          "name": "https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9"
        }
      ],
      "source": {
        "advisory": "GHSA-g5hg-p3ph-g8qg",
        "discovery": "UNKNOWN"
      },
      "title": "Multer vulnerable to Denial of Service via unhandled exception"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-48997",
    "datePublished": "2025-06-03T18:21:59.527Z",
    "dateReserved": "2025-05-29T16:34:07.174Z",
    "dateUpdated": "2025-06-03T18:30:13.178Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

Detection rules are retrieved from Rulezet.

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

GHSA-G5HG-P3PH-G8QG

Impact

Patches

Workarounds

References

CVE-2025-48997 (GCVE-0-2025-48997)

Tags

Sightings

Nomenclature

Related by attack behaviour