Vulnerability-Lookup

GHSA-X6FG-F45M-JF5Q

Vulnerability from github – Published: 2017-10-24 18:33 – Updated: 2026-03-03 20:03

Summary

Regular Expression Denial of Service in semver

Details

Versions 4.3.1 and earlier of semver are affected by a regular expression denial of service vulnerability when extremely long version strings are parsed.

Recommendation

Update to version 4.3.2 or later

Severity

7.5 (High)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "semver"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.0.4"
            },
            {
              "fixed": "4.3.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2015-8855"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T22:02:25Z",
    "nvd_published_at": "2017-01-23T21:59:00Z",
    "severity": "HIGH"
  },
  "details": "Versions 4.3.1 and earlier of `semver` are affected by a regular expression denial of service vulnerability when extremely long version strings are parsed.\n\n\n\n## Recommendation\n\nUpdate to version 4.3.2 or later",
  "id": "GHSA-x6fg-f45m-jf5q",
  "modified": "2026-03-03T20:03:27Z",
  "published": "2017-10-24T18:33:36Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2015-8855"
    },
    {
      "type": "WEB",
      "url": "https://github.com/github/advisory-database/pull/7102"
    },
    {
      "type": "WEB",
      "url": "https://github.com/npm/node-semver/commit/5c4c9f6e26c7052a42b5ced2a7481c5c9b4363a0"
    },
    {
      "type": "WEB",
      "url": "https://github.com/npm/node-semver/commit/c80180d8341a8ada0236815c29a2be59864afd70"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/advisories/GHSA-x6fg-f45m-jf5q"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/npm/node-semver"
    },
    {
      "type": "WEB",
      "url": "https://www.npmjs.com/advisories/31"
    },
    {
      "type": "WEB",
      "url": "https://www.owasp.org/index.php/Regular_expression_Denial_of_Service_-_ReDoS"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2016/04/20/11"
    },
    {
      "type": "WEB",
      "url": "http://www.securityfocus.com/bid/86957"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Regular Expression Denial of Service in semver"
}

CVE-2015-8855 (GCVE-0-2015-8855)

Vulnerability from cvelistv5 – Published: 2017-01-23 21:00 – Updated: 2024-08-06 08:29

Summary

The semver package before 4.3.2 for Node.js allows attackers to cause a denial of service (CPU consumption) via a long version string, aka a "regular expression denial of service (ReDoS)."

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2324 records in the last 180 days details

References

3 references

URL	Tags
http://www.securityfocus.com/bid/86957	vdb-entryx_refsource_BID
https://nodesecurity.io/advisories/31	x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2016/0…	mailing-listx_refsource_MLIST

Date Public

2015-04-03 00:00

Show details on NVD website

JSON

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          "dateUpdated": "2024-08-06T08:29:22.086Z",
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          },
          {
            "tags": [
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            ],
            "url": "https://nodesecurity.io/advisories/31"
          },
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            "tags": [
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            ],
            "url": "http://www.openwall.com/lists/oss-security/2016/04/20/11"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      ],
      "datePublic": "2015-04-03T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The semver package before 4.3.2 for Node.js allows attackers to cause a denial of service (CPU consumption) via a long version string, aka a \"regular expression denial of service (ReDoS).\""
        }
      ],
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              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-01-24T10:57:01.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
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      },
      "references": [
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        },
        {
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        },
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      "x_legacyV4Record": {
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          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2015-8855",
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            "vendor_data": [
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                  "product_data": [
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                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                      }
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    "datePublished": "2017-01-23T21:00:00.000Z",
    "dateReserved": "2016-04-20T00:00:00.000Z",
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    "state": "PUBLISHED"
  },
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}

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.

Vulnerability timeline

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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.

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