Description
CGI versions before 5.00 for Perl allow memory, CPU and disk exhaustion via missing or unenforced request size, parameter and upload limits.

$CGI::POST_MAX defaults to no limit, and when set is not enforced for chunked multipart bodies or for the boundary line of a multipart body without a boundary= parameter. Bodies saved as PUTDATA, POSTDATA or PATCHDATA uploads are read into memory in one go, and nothing limits the number of parameters or uploads.
Published: 2026-11-03
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 CGI 5.00 or later.


Vendor Workaround

For deployments that cannot upgrade, limit the request body size at the web server and set $CGI::POST_MAX.

Tracking

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Advisories

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History

Wed, 04 Nov 2026 12:15:00 +0000

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, 04 Nov 2026 00:00:00 +0000

Type Values Removed Values Added
Description CGI versions before 5.00 for Perl allow memory, CPU and disk exhaustion via missing or unenforced request size, parameter and upload limits. $CGI::POST_MAX defaults to no limit, and when set is not enforced for chunked multipart bodies or for the boundary line of a multipart body without a boundary= parameter. Bodies saved as PUTDATA, POSTDATA or PATCHDATA uploads are read into memory in one go, and nothing limits the number of parameters or uploads.
Title CGI versions before 5.00 for Perl allow memory, CPU and disk exhaustion via missing or unenforced request size, parameter and upload limits
Weaknesses CWE-770
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-11-03T23:41:14.474Z

Reserved: 2026-11-02T17:58:00.641Z

Link: CVE-2026-120650

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-04T00:17:26.507

Modified: 2026-11-04T00:17:26.507

Link: CVE-2026-120650

cve-icon Redhat

Severity : Important

Publid Date: 2026-11-03T23:41:14Z

Links: CVE-2026-120650 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T14:15:15Z

Weaknesses
  • CWE-770

    Allocation of Resources Without Limits or Throttling