Description
HTTP::Body versions before 1.23_01 for Perl allow memory and temporary file exhaustion via an unlimited number of form fields and multipart parts.

The urlencoded parser splits the whole body on its separators at once, creating one scalar per separator before any field is stored. This costs about 90 bytes of memory per separator byte. The multipart parser creates a temporary file for every part that carries a filename. Neither parser limits how many fields or parts a body may hold.

A remote attacker can exhaust worker memory with a body made of separators, or create thousands of temporary files with one request of small file parts.
Published: 2026-10-28
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to HTTP-Body 1.23_01 or later.

Tracking

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Advisories

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History

Sat, 31 Oct 2026 01:30:00 +0100

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Important


Wed, 28 Oct 2026 23:30:00 +0100

Type Values Removed Values Added
First Time appeared Libwww-perl
Libwww-perl http-body
Vendors & Products Libwww-perl
Libwww-perl http-body

Wed, 28 Oct 2026 18:30:00 +0100

Type Values Removed Values Added
Description HTTP::Body versions before 1.23_01 for Perl allow memory and temporary file exhaustion via an unlimited number of form fields and multipart parts. The urlencoded parser splits the whole body on its separators at once, creating one scalar per separator before any field is stored. This costs about 90 bytes of memory per separator byte. The multipart parser creates a temporary file for every part that carries a filename. Neither parser limits how many fields or parts a body may hold. A remote attacker can exhaust worker memory with a body made of separators, or create thousands of temporary files with one request of small file parts.
Title HTTP::Body versions before 1.23_01 for Perl allow memory and temporary file exhaustion via an unlimited number of form fields and multipart parts
Weaknesses CWE-770
References

Subscriptions

Libwww-perl Http-body
cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-10-28T17:14:43.357Z

Reserved: 2026-10-25T11:14:04.979Z

Link: CVE-2026-116131

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-28T18:17:12.223

Modified: 2026-10-29T15:11:53.000

Link: CVE-2026-116131

cve-icon Redhat

Severity : Important

Publid Date: 2026-10-28T17:14:43Z

Links: CVE-2026-116131 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-31T03:30:15Z

Weaknesses