CVE-2026-27904 (GCVE-0-2026-27904)
Vulnerability from cvelistv5 – Published: 2026-02-26 01:07 – Updated: 2026-02-26 01:07
VLAI?
Title
minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions
Summary
minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4, nested `*()` extglobs produce regexps with nested unbounded quantifiers (e.g. `(?:(?:a|b)*)*`), which exhibit catastrophic backtracking in V8. With a 12-byte pattern `*(*(*(a|b)))` and an 18-byte non-matching input, `minimatch()` stalls for over 7 seconds. Adding a single nesting level or a few input characters pushes this to minutes. This is the most severe finding: it is triggered by the default `minimatch()` API with no special options, and the minimum viable pattern is only 12 bytes. The same issue affects `+()` extglobs equally. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4 fix the issue.
Severity ?
7.5 (High)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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Impacted products
{
"containers": {
"cna": {
"affected": [
{
"product": "minimatch",
"vendor": "isaacs",
"versions": [
{
"status": "affected",
"version": "\u003e= 10.0.0, \u003c 10.2.3"
},
{
"status": "affected",
"version": "\u003e= 9.0.0, \u003c 9.0.7"
},
{
"status": "affected",
"version": "\u003e= 8.0.0, \u003c 8.0.6"
},
{
"status": "affected",
"version": "\u003e= 7.0.0, \u003c 7.4.8"
},
{
"status": "affected",
"version": "\u003e= 6.0.0, \u003c 6.2.2"
},
{
"status": "affected",
"version": "\u003e= 5.0.0, \u003c 5.1.8"
},
{
"status": "affected",
"version": "\u003e= 4.0.0, \u003c 4.2.5"
},
{
"status": "affected",
"version": "\u003c 3.1.4"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "minimatch is a minimal matching utility for converting glob expressions into JavaScript RegExp objects. Prior to version 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4, nested `*()` extglobs produce regexps with nested unbounded quantifiers (e.g. `(?:(?:a|b)*)*`), which exhibit catastrophic backtracking in V8. With a 12-byte pattern `*(*(*(a|b)))` and an 18-byte non-matching input, `minimatch()` stalls for over 7 seconds. Adding a single nesting level or a few input characters pushes this to minutes. This is the most severe finding: it is triggered by the default `minimatch()` API with no special options, and the minimum viable pattern is only 12 bytes. The same issue affects `+()` extglobs equally. Versions 10.2.3, 9.0.7, 8.0.6, 7.4.8, 6.2.2, 5.1.8, 4.2.5, and 3.1.4 fix the issue."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1333",
"description": "CWE-1333: Inefficient Regular Expression Complexity",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-26T01:07:42.693Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/isaacs/minimatch/security/advisories/GHSA-23c5-xmqv-rm74",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/isaacs/minimatch/security/advisories/GHSA-23c5-xmqv-rm74"
}
],
"source": {
"advisory": "GHSA-23c5-xmqv-rm74",
"discovery": "UNKNOWN"
},
"title": "minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-27904",
"datePublished": "2026-02-26T01:07:42.693Z",
"dateReserved": "2026-02-24T15:19:29.718Z",
"dateUpdated": "2026-02-26T01:07:42.693Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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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.
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