Process hang via greedy brace-matching regular expression
Published Oct 17, 2022 · Updated May 13, 2025
Regular expression denial of service in minimatch before 3.0.5 allows attackers to hang a consuming Node.js process via a crafted glob pattern. braceExpand applies the greedy /{.*}/ expression before its only length check, so oversized brace strings consume excessive CPU during matching. Exploitation requires a consuming application to pass attacker-controlled glob patterns; the bounded consequence is process unresponsiveness, not data access or modification.
Summary
What happened
Regular expression denial of service in minimatch before 3.0.5 allows attackers to hang a consuming Node.js process via a crafted glob pattern. braceExpand applies the greedy /{.*}/ expression before its only length check, so oversized brace strings consume excessive CPU during matching. Exploitation requires a consuming application to pass attacker-controlled glob patterns; the bounded consequence is process unresponsiveness, not data access or modification.
The record
- CVE
- CVE-2022-3517
- Published
- Oct 17, 2022
- Updated
- May 13, 2025
- Vendor
- Isaac Z. Schlueter
- Product
- minimatch
- Classifications
- CWE-1333, CWE-400, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 17, 2022CVE publishedPublication date reported by the CVE source.
- May 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=minimatch versions prior to 3.0.5
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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