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CVE-2026-56391VulnerabilityPublished Updated

SUSE · Security update for coreutils

Affects SUSESource GCVE Database

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Authoritative record:CVE-2026-56391· Medium 4.6

Not known to be exploited · CVSS 4.6 Medium.

Data as of 10 Nov 2026, 20:07 UTC

CVSS 4.0 base score
4.6Medium
How severe the flaw is on the 0–10 CVSS scale.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Jul 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
GNUcoreutilsAffected
  • >=9.5 <=9.11
Fixed in–

AI-suggested

A security update for coreutils has been released by the SUSE Product Security Team to fix this vulnerability. Users should apply the update to remediate the issue. Patch status is not explicitly confirmed in the input, so users should verify the availability of the fix from the vendor advisory.

Description

A security update for coreutils addresses CVE-2026-56391, which involves the 'uniq' utility. The vulnerability allows denial of service and information disclosure through an out-of-bounds read triggered by multibyte input.

References

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