What’s Vulnerable › Vulnerabilities

CVE-2026-102473: Dash: dash: super-polynomial backtracking in pmatch when libc fnmatch is disabled

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-29 · updated 2026-09-30
• Weakness: CWE-1333

Description

A flaw was found in dash. When built without libc fnmatch, the internal pmatch() matcher implements * by unbounded recursion over candidate positions. A local user who can plant filenames, or otherwise feed that matcher, can make a short multi-star pattern such as *.*.*.*.*.tar.gz consume excessive CPU.

References

• https://access.redhat.com/security/cve/CVE-2026-102473
• https://bugzilla.redhat.com/show_bug.cgi?id=2543005

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