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CVE-2026-18477VulnerabilityPublished Updated

Bundesamt für Sicherheit in der Informationstechnik Fedora · GNU tar: Mehrere Schwachstellen ermöglichen Manipulation von Dateien

Affects Bundesamt für Sicherheit in der Informationstechnik FedoraSource GCVE Database

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Authoritative record:CVE-2026-18477· Medium 4.4

Not known to be exploited · CVSS 4.4 Medium.

Data as of 11 Nov 2026, 10:18 UTC

CVSS 3.1 base score
4.4Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (redhat)CVSS 3.14.4
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 3 Aug 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
Red Hat Enterprise Linux 10tarAffected–Fixed in–
Red Hat Enterprise Linux 8tarAffected–Fixed in–
Red Hat Enterprise Linux 9tarAffected–Fixed in–
Red Hat Discovery 2discovery/discovery-server-rhel9Affected–Fixed in–
Red Hat Hardened Imagestar-mainAffected–Fixed in–
Red Hat Update Infrastructure 5rhui5/cds-kubernetes-rhel9Affected–Fixed in–

AI-suggested

Apply the updated RPM packages provided by Red Hat (tar-1.35-9.2.hum1) for Red Hat Hardened Images as detailed in the Red Hat advisory RHSA-2026:50807. This update addresses the vulnerabilities and mitigates the risk of file manipulation. No additional action is required beyond applying the official update.

Description

Multiple vulnerabilities have been identified in GNU Tar, a widely used archive processing program included in many Linux distributions. These vulnerabilities could allow manipulation of files. Red Hat has issued security advisories addressing related CVEs, including CVE-2026-18477, with updated RPM packages available for Red Hat Hardened Images. No public exploit code or in-the-wild exploitation has been reported. The advisories recommend applying the provided updates to mitigate the issues.

References

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