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VulnerabilityPublished

CVE-2026-121006: HTTP::Body versions before 1.24_02 for Perl parse the trailer in quadratic time

Source GCVE Database

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Authoritative record:CVE-2026-121006· High

Not known to be exploited : upgrade to 1.24_02 soon.

Data as of 6 Nov 2026, 10:35 UTC

Severity
High

Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD

Thin evidence

One scorer or none
Patch
Available – fixed in 1.24_02

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 6 Nov 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 HTTP-Body (Perl module) to 1.24_02.

Affected software

ProductAffectedFixed in
HTTP-BodyAffected
  • <1.24_02
Fixed in
  • 1.24_02
CPANHTTP-Bodypkg:cpan/HTTP-BodyOther threatsAffected
  • <1.24_02
Fixed in
  • 1.24_02

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

AI-suggested

Upgrade to HTTP::Body version 1.25 or later, which limits the size and number of lines in the trailer and mitigates the quadratic parsing time vulnerability. No other mitigation is indicated.

Description

HTTP::Body versions before 1.24_02 for Perl have a performance vulnerability where parsing the trailer section occurs in quadratic time relative to the number of repeated header fields. This can cause excessive CPU usage when processing specially crafted requests with many repeated trailer fields. Version 1.25 mitigates this by limiting the size and number of lines in the trailer.

References

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