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VulnerabilityPublished Updated

CVE-2026-116267: Libmime tools perl · MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented

Affects libmime-tools-perlSource GCVE Database

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Authoritative record:CVE-2026-116267· High

Not known to be exploited.

Data as of 5 Nov 2026, 12:35 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Thin evidence

One scorer or none

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 28 Oct 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

Affected software

ProductAffectedFixed in
Ubuntu 26.10libmime-tools-perlpkg:deb/ubuntu/libmime-tools-perl?arch=source&distro=stonkingOther threatsAffected
  • =5.517-1
Fixed in–
Ubuntu 26.04 LTSlibmime-tools-perlpkg:deb/ubuntu/libmime-tools-perl?arch=source&distro=resoluteOther threatsAffected
  • =5.515-1
  • =5.517-1
Fixed in–
Ubuntu 24.04 LTSlibmime-tools-perlpkg:deb/ubuntu/libmime-tools-perl?arch=source&distro=nobleOther threatsAffected
  • 5.510-3 – 5.514-1
4 affected builds
Fixed in–
Ubuntu 22.04 LTSlibmime-tools-perlpkg:deb/ubuntu/libmime-tools-perl?arch=source&distro=jammyOther threatsAffected
  • =5.509-1
Fixed in–
Ubuntu 20.04 LTSlibmime-tools-perlpkg:deb/ubuntu/libmime-tools-perl?arch=source&distro=focalOther threatsAffected
  • =5.509-1
Fixed in–
Ubuntu 18.04 LTSlibmime-tools-perlpkg:deb/ubuntu/libmime-tools-perl?arch=source&distro=bionicOther threatsAffected
  • =5.508-1
  • =5.509-1
Fixed in–

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

Description

MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message. Each stored parser diagnostic is indented by three spaces per nesting level. When a message nested N levels deep ends without its closing boundaries, every level logs an error at its own depth, so the stored diagnostics grow with the square of N. The defaults place no limit on nesting depth.

References

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