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No exploitation reportedFix availableAwaiting NVD analysis

CVE-2026-116133

HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundary

No exploitation reported by the sources we read.

  • Published2026-10-28
  • WeaknessCWE-407

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundary. Before the first part, and between parts, the multipart parser searches the whole buffered body for the next boundary. On a miss it keeps everything and searches again from the start when the next chunk arrives. A body with no boundary, or with a delimiter followed by neither CRLF nor "--", is therefore rescanned on every chunk, taking time quadratic in its size. A remote attacker can exhaust worker CPU with a few such requests.

Timeline

dates in UTC
  1. 2026-10-2817:15CVE publishedCNA

Versions per branch

Products declared by the CNA1 product

As CPANSec, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-10-28

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libhttp-body-perlUbuntu:26.10all versions · no fixed version listed
  • libhttp-body-perlUbuntu:26.04:LTSall versions · no fixed version listed
  • libhttp-body-perlUbuntu:24.04:LTSall versions · no fixed version listed
  • libhttp-body-perlUbuntu:22.04:LTSall versions · no fixed version listed
  • libhttp-body-perlUbuntu:20.04:LTSall versions · no fixed version listed
  • libhttp-body-perlUbuntu:18.04:LTSall versions · no fixed version listed
  • libhttp-body-perlUbuntu:16.04:LTSall versions · no fixed version listed
  • libhttp-body-perlDebian:14all versions · fixed in 1.24.01-1

3 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-116133 Red Hat Product Security

    perl-http-body: HTTP::Body: Denial of Service via malformed multipart request body

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2026-10-28
Last Modified
2026-11-05
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-xcwx-vggw-cvw9

Frequently asked questions

What is CVE-2026-116133?

HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundary. Before the first part, and between parts, the multipart parser searches the whole buffered body for the next boundary. On a miss it keeps everything and searches again from the start when the next chunk arrives. A body with no boundary, or with a delimiter followed by neither CRLF nor "--", is therefore rescanned on every chunk, taking time quadratic in its size. A remote attacker can exhaust worker CPU with a few such requests.

Is CVE-2026-116133 actively exploited?

Active exploitation of CVE-2026-116133 has not been confirmed. Its EPSS score was 0.3% on 2026-11-05, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-116133?

CVE-2026-116133 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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