Bug 2442922 (CVE-2026-27904) - CVE-2026-27904 minimatch: Minimatch: Denial of Service via catastrophic backtracking in glob expressions
Summary: CVE-2026-27904 minimatch: Minimatch: Denial of Service via catastrophic backt...
Keywords:
Status: NEW
Alias: CVE-2026-27904
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-26 02:01 UTC by OSIDB Bzimport
Modified: 2026-03-02 13:43 UTC (History)
129 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-02-26 02:01:46 UTC
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.


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