Vulnerability-Lookup

CVE-2026-26996 (GCVE-0-2026-26996)

Vulnerability from cvelistv5 – Published: 2026-02-20 03:05 – Updated: 2026-02-20 15:34

Title

minimatch has a ReDoS via repeated wildcards with non-matching literal in pattern

Summary

minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Versions 10.2.0 and below are vulnerable to Regular Expression Denial of Service (ReDoS) when a glob pattern contains many consecutive * wildcards followed by a literal character that doesn't appear in the test string. Each * compiles to a separate [^/]*? regex group, and when the match fails, V8's regex engine backtracks exponentially across all possible splits. The time complexity is O(4^N) where N is the number of * characters. With N=15, a single minimatch() call takes ~2 seconds. With N=34, it hangs effectively forever. Any application that passes user-controlled strings to minimatch() as the pattern argument is vulnerable to DoS. This issue has been fixed in version 10.2.1.

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

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M

References

URL

Tags

	https://github.com/isaacs/minimatch/security/advi…	x_refsource_CONFIRM
	https://github.com/isaacs/minimatch/commit/2e111f…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	isaacs	minimatch	Affected: < 10.2.1

Show details on NVD website

JSON

To clipboard

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GHSA-3PPC-4F35-3M26

Vulnerability from github – Published: 2026-02-18 22:38 – Updated: 2026-02-24 20:59

Summary

minimatch has a ReDoS via repeated wildcards with non-matching literal in pattern

Details

Summary

minimatch is vulnerable to Regular Expression Denial of Service (ReDoS) when a glob pattern contains many consecutive * wildcards followed by a literal character that doesn't appear in the test string. Each * compiles to a separate [^/]*? regex group, and when the match fails, V8's regex engine backtracks exponentially across all possible splits.

The time complexity is O(4^N) where N is the number of * characters. With N=15, a single minimatch() call takes ~2 seconds. With N=34, it hangs effectively forever.

Details

Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer.

PoC

When minimatch compiles a glob pattern, each * becomes [^/]*? in the generated regex. For a pattern like ***************X***:

/^(?!\.)[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?X[^/]*?[^/]*?[^/]*?$/

When the test string doesn't contain X, the regex engine must try every possible way to distribute the characters across all the [^/]*? groups before concluding no match exists. With N groups and M characters, this is O(C(N+M, N)) — exponential.

Impact

Any application that passes user-controlled strings to minimatch() as the pattern argument is vulnerable to DoS. This includes: - File search/filter UIs that accept glob patterns - .gitignore-style filtering with user-defined rules - Build tools that accept glob configuration - Any API that exposes glob matching to untrusted input

Thanks to @ljharb for back-porting the fix to legacy versions of minimatch.

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

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "minimatch"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "10.0.0"
            },
            {
              "fixed": "10.2.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "minimatch"
      },
      "ranges": [
        {
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              "introduced": "9.0.0"
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      "package": {
        "ecosystem": "npm",
        "name": "minimatch"
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      "ranges": [
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            {
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        "ecosystem": "npm",
        "name": "minimatch"
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    },
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        "ecosystem": "npm",
        "name": "minimatch"
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      "ranges": [
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            },
            {
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        }
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    {
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        "ecosystem": "npm",
        "name": "minimatch"
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    "github_reviewed_at": "2026-02-18T22:38:11Z",
    "nvd_published_at": "2026-02-20T03:16:01Z",
    "severity": "HIGH"
  },
  "details": "### Summary\n`minimatch` is vulnerable to Regular Expression Denial of Service (ReDoS) when a glob pattern contains many consecutive `*` wildcards followed by a literal character that doesn\u0027t appear in the test string. Each `*` compiles to a separate `[^/]*?` regex group, and when the match fails, V8\u0027s regex engine backtracks exponentially across all possible splits.\n\nThe time complexity is O(4^N) where N is the number of `*` characters. With N=15, a single `minimatch()` call takes ~2 seconds. With N=34, it hangs effectively forever.\n\n\n### Details\n_Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._\n\n### PoC\nWhen minimatch compiles a glob pattern, each `*` becomes `[^/]*?` in the generated regex. For a pattern like `***************X***`:\n\n```\n/^(?!\\.)[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?[^/]*?X[^/]*?[^/]*?[^/]*?$/\n```\n\nWhen the test string doesn\u0027t contain `X`, the regex engine must try every possible way to distribute the characters across all the `[^/]*?` groups before concluding no match exists. With N groups and M characters, this is O(C(N+M, N)) \u2014 exponential.\n### Impact\nAny application that passes user-controlled strings to `minimatch()` as the pattern argument is vulnerable to DoS. This includes:\n- File search/filter UIs that accept glob patterns\n- `.gitignore`-style filtering with user-defined rules\n- Build tools that accept glob configuration\n- Any API that exposes glob matching to untrusted input\n\n----\n\nThanks to @ljharb for back-porting the fix to legacy versions of minimatch.",
  "id": "GHSA-3ppc-4f35-3m26",
  "modified": "2026-02-24T20:59:57Z",
  "published": "2026-02-18T22:38:11Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/isaacs/minimatch/security/advisories/GHSA-3ppc-4f35-3m26"
    },
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    },
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      "url": "https://github.com/isaacs/minimatch/commit/2e111f3a79abc00fa73110195de2c0f2351904f5"
    },
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      "type": "PACKAGE",
      "url": "https://github.com/isaacs/minimatch"
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  "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": "minimatch has a ReDoS via repeated wildcards with non-matching literal in pattern"
}

FKIE_CVE-2026-26996

Vulnerability from fkie_nvd - Published: 2026-02-20 03:16 - Updated: 2026-02-20 19:12

Severity ?

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/isaacs/minimatch/commit/2e111f3a79abc00fa73110195de2c0f2351904f5	Patch
	security-advisories@github.com	https://github.com/isaacs/minimatch/security/advisories/GHSA-3ppc-4f35-3m26	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	minimatch_project	minimatch	*

JSON

To clipboard

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    },
    {
      "lang": "es",
      "value": "minimatch es una utilidad de coincidencia m\u00ednima para convertir expresiones glob en objetos RegExp de JavaScript. Las versiones 10.2.0 e inferiores son vulnerables a la denegaci\u00f3n de servicio por expresi\u00f3n regular (ReDoS) cuando un patr\u00f3n glob contiene muchos comodines * consecutivos seguidos de un car\u00e1cter literal que no aparece en la cadena de prueba. Cada * se compila en un grupo de regex [^/]*? separado, y cuando la coincidencia falla, el motor de regex de V8 retrocede exponencialmente a trav\u00e9s de todas las posibles divisiones. La complejidad temporal es O(4^N) donde N es el n\u00famero de caracteres *. Con N=15, una sola llamada a minimatch() tarda ~2 segundos. Con N=34, se cuelga efectivamente para siempre. Cualquier aplicaci\u00f3n que pase cadenas controladas por el usuario a minimatch() como argumento de patr\u00f3n es vulnerable a DoS. Este problema ha sido solucionado en la versi\u00f3n 10.2.1."
    }
  ],
  "id": "CVE-2026-26996",
  "lastModified": "2026-02-20T19:12:33.527",
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    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/isaacs/minimatch/security/advisories/GHSA-3ppc-4f35-3m26"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

CVE-2026-26996 (GCVE-0-2026-26996)

GHSA-3PPC-4F35-3M26

Summary

Details

PoC

Impact

FKIE_CVE-2026-26996

Tags

Sightings

Nomenclature