Vulnerability in Red Hat Enterprise Linux 6

CVE-2026-102473

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.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

Published .

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-102473?
CVE-2026-102473 is a medium-severity vulnerability in Red Hat Enterprise Linux 6, classified under Inefficient Regular Expression Complexity. CVSS score: 5.5/10. Published 2026-09-29.
How severe is CVE-2026-102473?
Medium severity. CVSS v3 base score is 5.5 out of 10.