CVE-2026-27903Public exploitNetwork attack vector

Denial of service via GLOBSTAR backtracking

Published Feb 26, 2026 · Updated Feb 26, 2026

Algorithmic-complexity denial of service in minimatch allows attackers to stall Node.js applications through crafted glob patterns. In matchOne(), each non-adjacent GLOBSTAR recursively tries every suffix of the remaining path without a visited-state cache or call budget. Reachability requires attacker influence over the glob pattern; a nonmatching path then blocks the shared event loop for seconds per call.

CVSS severity7.5
High
EPSS probability0.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Algorithmic-complexity denial of service in minimatch allows attackers to stall Node.js applications through crafted glob patterns. In matchOne(), each non-adjacent GLOBSTAR recursively tries every suffix of the remaining path without a visited-state cache or call budget. Reachability requires attacker influence over the glob pattern; a nonmatching path then blocks the shared event loop for seconds per call.

The record

CVE
CVE-2026-27903
Published
Feb 26, 2026
Updated
Feb 26, 2026
Vendor
Isaac Z. Schlueter
Product
minimatch
Classifications
CWE-407, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 10.0.0, < 10.2.3
  2. Affected versionversion=< 3.1.3
  3. Affected versionversion=>= 4.0.0, < 4.2.5
  4. Affected versionversion=>= 5.0.0, < 5.1.8
  5. Affected versionversion=>= 6.0.0, < 6.2.2
  6. Affected versionversion=>= 7.0.0, < 7.4.8
  7. Affected versionversion=>= 8.0.0, < 8.0.6
  8. Affected versionversion=>= 9.0.0, < 9.0.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Isaac Z. Schlueter · minimatchversion=>= 10.0.0, < 10.2.3; version=< 3.1.3; version=>= 4.0.0, < 4.2.5; version=>= 5.0.0, < 5.1.8; version=>= 6.0.0, < 6.2.2; version=>= 7.0.0, < 7.4.8; version=>= 8.0.0, < 8.0.6; version=>= 9.0.0, < 9.0.7

Published CVSS scores

7.5GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-407Inefficient Algorithmic Complexity
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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