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VulnerabilityPublished Updated

CVE-2026-110680: Libcpanel json xs perl · Cpanel::JSON::XS versions from 4.20 before 4.80 for Perl write out of bounds

Affects libcpanel-json-xs-perlSource GCVE Database

0
Authoritative record:CVE-2026-110680· Medium

Not known to be exploited · fixed in 4.80 : update libcpanel-json-xs-perl when convenient.

Data as of 29 Oct 2026, 00:00 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in 4.80

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 19 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: 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 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Ubuntu 26.10libcpanel-json-xs-perlpkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=stonkingOther threatsAffected
  • =4.40-1
  • =4.42-1
  • =4.42-1build1
Fixed in–
Ubuntu 26.04 LTSlibcpanel-json-xs-perlpkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=resoluteOther threatsAffected
  • =4.39-2
  • =4.40-1
Fixed in–
Ubuntu 24.04 LTSlibcpanel-json-xs-perlpkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=nobleOther threatsAffected
  • 4.37-1 – 4.37-1ubuntu0.1
5 affected builds
Fixed in–
Ubuntu 22.04 LTSlibcpanel-json-xs-perlpkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=jammyOther threatsAffected
  • 4.25-1build1 – 4.27-1ubuntu0.2
6 affected builds
Fixed in–
Ubuntu 20.04 LTSlibcpanel-json-xs-perlpkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=focalOther threatsAffected
  • 4.12-1 – 4.19-1ubuntu0.1
8 affected builds
Fixed in–
Ubuntu 18.04 LTSlibcpanel-json-xs-perlpkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=bionicOther threatsAffected
  • =3.0225-1build1
  • =3.0239-1
Fixed in–

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

AI-suggested

A fixed version of Cpanel::JSON::XS is available starting from version 4.80. Users should upgrade to version 4.80 or later to remediate this vulnerability. No other mitigation or temporary workaround is indicated in the provided data.

Description

Cpanel::JSON::XS versions from 4.20 before 4.80 for Perl have a write out of bounds vulnerability during canonical encoding of tied or shared hashes. This occurs when the hash grows between two passes of key counting and sorting, causing memory corruption and potential process crashes.

References

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