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CVE

CVE-2026-27904

minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions
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CVE

CVE-2026-27904

minimatch ReDoS: nested *() extglobs generate catastrophically backtracking regular expressions

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27904.json, https://github.com/isaacs/minimatch/security/advisories/GHSA-23c5-xmqv-rm74, https://nvd.nist.gov/vuln/detail/CVE-2026-27904

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00026%
EPSS Percentile
0.07424%
Introduced Version
346685ced5203464bb10fd3d4dfa6964f6102ede,b95cb1e4404ce374e447b3b1bfde837e74f139bd,5d20578d5749f53f3413b7ca413e5658d6ab0d05,ce9e6a4b42eb8a4c39eff1258affa9d37c66101b,31f61eeaa6c4493f81bf5eb0a146f23e538fdfd7,fc44f5f9123f534ecbf76af65558eb87d90f1028,26d281dc585af91df47cb93844e227e0ee90b7ce,0
Fix Available
ea94840326c3f40522f1b544bd2303024b0eec35,2de496f6d9362dd92460f35ffa6ff8de2907244b,a5f07f4b8de8a068e8fcafd44e7cafc2a8fe7be3,6fcf01a77e8a85765609e41be089595a36989e07,dc3340d6509d25d4bb75258e6d3b4403bb1cd9c3,e92ae291a1e512f2d7ae13d6797b02315f68a40c,5970751fa5886750886a59a20de834d54b4e2541,1a2e084af579731af66c221214e3ca8222c9bf23,0:3.0.1-1.module+el8.10.0+23521+490ebfde,0:2021.06-6.module+el8.10.0+24197+1602b452,1:10.8.2-1.20.20.2.1.module+el8.10.0+24197+1602b452,1:20.20.2-1.module+el8.10.0+24197+1602b452,1:22.22.2-1.module+el8.10.0+24148+847b6786,0:2021.06-6.module+el8.10.0+24148+847b6786,0:3.0.1-1.module+el8.10.0+24148+847b6786,1:10.9.7-1.22.22.2.1.module+el8.10.0+24148+847b6786,3:12.4.254.21-1.22.22.2.1.module+el8.10.0+24148+847b6786,1:22.22.2-1.module+el9.7.0+24157+8ddb2461,0:2021.06-6.module+el9.7.0+24157+8ddb2461,3:12.4.254.21-1.22.22.2.1.module+el9.7.0+24157+8ddb2461,0:3.0.1-1.module+el9.7.0+24157+8ddb2461,1:10.9.7-1.22.22.2.1.module+el9.7.0+24157+8ddb2461,1:20.20.2-1.module+el9.7.0+24193+41b7b572,0:3.0.1-1.module+el9.7.0+24193+41b7b572,0:2021.06-6.module+el9.7.0+24193+41b7b572,1:10.8.2-1.20.20.2.1.module+el9.7.0+24193+41b7b572,1:20.20.2-1.module+el8.10.0+90878+0d41f8c0,0:3.0.1-1.module+el8.10.0+90743+b61054a8,0:2021.06-5.module+el8.10.0+90878+0d41f8c0,1:10.8.2-1.20.20.2.1.module+el8.10.0+90878+0d41f8c0,1:22.22.2-1.module+el8.10.0+90865+d647ef3a,0:3.0.1-1.module+el8.10.0+90865+d647ef3a,0:2021.06-4.module+el8.10.0+90865+d647ef3a,1:10.9.7-1.22.22.2.1.module+el8.10.0+90865+d647ef3a,3:12.4.254.21-1.22.22.2.1.module+el8.10.0+90865+d647ef3a,1:20.20.2-1.module+el9.7.0+90874+6d84790f,0:3.0.1-1.module+el9.7.0+90874+6d84790f,0:2021.06-6.module+el9.7.0+90874+6d84790f,1:10.8.2-1.20.20.2.1.module+el9.7.0+90874+6d84790f,1:22.22.2-1.module+el9.7.0+90867+2ede48fe,0:3.0.1-1.module+el9.7.0+90867+2ede48fe,0:2021.06-6.module+el9.7.0+90867+2ede48fe,1:10.9.7-1.22.22.2.1.module+el9.7.0+90867+2ede48fe,3:12.4.254.21-1.22.22.2.1.module+el9.7.0+90867+2ede48fe,2.332.0-r1,3.11.14.3-r2,3.12.7.2-r3,3.6.19-r6,3.7.13-r2,4.0.4-r6,4.109.2-r0,5.0.2-r1,10.0.2-r1,25.0.2-r4,8.17.10-r12,8.19.12-r2,9.0.8-r13,9.1.10-r6,9.2.5-r5,9.3.0-r2,1.10.0-r13,2.95.12-r12,9.0.5-r1,0.8.2-r6,12.2.0-r2,11.11.0-r1,2.19.4-r15,2.19.4-r13,3.5.0-r6,3.5.0-r9,0.70.1-r1,5.14.3-r8,3.224.0-r1,43.49.0-r1,14.2.6-r0,5.5.0-r6,5.5.0-r7,22.0.4-r4,23.0.3-r5

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