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Vulnerabilities

Vulnerability · CVE-2026-33672

Picomatch is a glob matcher written JavaScript.

Published Mar 26, 2026 · catalog updated Jun 17, 2026 · Picomatch is a glob

Check if you run it

No confirmed exploitation is on record for CVE-2026-33672. EPSS is 0.51%. Act only if a listed version of Picomatch is a glob is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Picomatch is a glob).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.51%
Remediation
Advisory link
Affected products
cpe jonschlinkert/picomatch

Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to a method injection vulnerability affecting the object. Because the object inherits from , specially crafted POSIX bracket expressions (e.g., ) can reference inherited method names. These methods are implicitly converted to strings and injected into the generated regular expression. This leads to incorrect glob matching behavior (integrity impact), where patterns may match unintended filenames. The issue does not enable remote code execution, but it can cause security-relevant logic errors in applications that rely on glob matching for filtering, validation, or access control. All users of affected versions that process untrusted or user-controlled glob patterns are potentially impacted. This issue is fixed in picomatch 4.0.4, 3.0.2 and 2.3.2. Users should upgrade to one of these versions or later, depending on their supported release line. If upgrading is not immediately possible, avoid passing untrusted glob patterns to picomatch. Possible mitigations include sanitizing or rejecting untrusted glob patterns, especially those containing POSIX character classes like ; avoiding the use of POSIX bracket expressions if user input is involved; and manually patching the library by modifying to use a null prototype.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe jonschlinkert/picomatchversion unspecified

How to fix CVE-2026-33672

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-33672. EPSS is 0.51%. Act only if a listed version of Picomatch is a glob is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). EPSS 0.51%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 26, 2026 · NIST NVD

    Detected

    Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to a method injection vulnerability affecting the object. Because the object inherits from , specially crafted POSIX bracket expressions (e.g., ) can reference inherited method names. These methods are implicitly converted to strings and injected into the generated regular expression. This lead

  2. Jun 17, 2026 · NIST NVD

    Updated

    Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to a method injection vulnerability affecting the object. Because the object inherits from , specially crafted POSIX bracket expressions (e.g., ) can reference inherited method names. These methods are implicitly converted to strings and injected into the generated regular expression. This lead

Sources

  • CVE.orgVulnerability recordCVE-2026-33672

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-33672

    30-day exploitation probability 0.5%

    first.org
  • NIST NVDVulnerability recordCVE-2026-33672

    Picomatch is a glob matcher written JavaScript. Versions prior to 4.0.4, 3.0.2, and 2.3.2 are vulnerable to a method injection vulnerability affecting the object. Because the object inherits from , specially crafted POSIX bracket expressions

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.