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CVE-2026-9538VulnerabilityPublished Updated

Red Hat Security Advisory: perl-Archive-Tar security update

Affects Red Hat perl-Archive-TarSource GCVE Database

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Authoritative record:CVE-2026-9538· High 7.5

Not known to be exploited · CVSS 7.5 High : upgrade Red Hat Archive-Tar to 3.10 soon.

Data as of 6 Nov 2026, 04:33 UTC

CVSS 3.1 base score
7.5High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 3.10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 26 May 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 5 Nov 2026.

What to do

Upgrade Archive::Tar and Archive-Tar to 3.10.

Affected software

ProductAffectedFixed in
BINGOSArchive::TarAffected
  • <3.10
Fixed in
  • 3.10
GitHubArchive-Tarpkg:github/Archive-TarOther threatsAffected
  • <3.10
Fixed in
  • 3.10

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Red Hat has released updated perl-Archive-Tar packages that fix this vulnerability. Users of Red Hat Enterprise Linux 8 should apply the security update as detailed in Red Hat advisory RHSA-2026:49524 and the referenced article https://access.redhat.com/articles/11258. No additional mitigation steps are indicated beyond applying the official patch.

Description

A denial of service vulnerability (CVE-2026-9538) exists in the perl-Archive-Tar module used in Red Hat Enterprise Linux 8. The flaw allows a crafted tar header with a large entry size to cause a denial of service. Red Hat has released an important security update to address this issue in multiple architectures of RHEL 8.

References

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