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VulnerabilityPublished Updated

CVE-2026-116135: Libhttp body perl · HTTP::Body versions before 1.23_01 for Perl drop mixed-case percent escapes from

Affects libhttp-body-perlSource GCVE Database

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Authoritative record:CVE-2026-116135· Medium

Not known to be exploited.

Data as of 5 Nov 2026, 12:35 UTC

Severity
Medium

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 26.10libhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=stonkingOther threatsAffected
  • =1.23-1
Fixed in–
Ubuntu 26.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=resoluteOther threatsAffected
  • =1.23-1
Fixed in–
Ubuntu 24.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=nobleOther threatsAffected
  • =1.22-2
Fixed in–
Ubuntu 22.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=jammyOther threatsAffected
  • =1.22-1.1
Fixed in–
Ubuntu 20.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=focalOther threatsAffected
  • =1.22-1
Fixed in–
Ubuntu 18.04 LTSlibhttp-body-perlpkg:deb/ubuntu/libhttp-body-perl?arch=source&distro=bionicOther threatsAffected
  • =1.22-1
Fixed in–

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

Description

HTTP::Body versions before 1.23_01 for Perl drop mixed-case percent escapes from urlencoded form fields instead of decoding them. The decode table holds only the all-lowercase and all-uppercase spelling of each hex pair, while the escape pattern matches either case. An escape such as %aB finds no entry and is replaced with nothing, joining the bytes on either side. Hex digits in percent escapes are case-insensitive, and conforming decoders return the byte. A remote attacker can send a field name or value that a conforming decoder in front of the application reads differently, so that pass%aBword reaches the application as password.

References

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