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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-120650
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-04 00:17:26 UTC
Updated2026-11-04 18:42:35 UTC
DescriptionCGI 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.

Risk And Classification

EPSS: 0.001850000 probability, percentile 0.081450000 (date 2026-11-04)

Problem Types: CWE-770 | CWE-770 CWE-770 Allocation of Resources Without Limits or Throttling

References

ReferenceSourceLinkTags
github.com/leejo/CGI.pm/commit/f3febefe63fe3881d8c3ae10fa83ca8ec950b959.... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
metacpan.org/release/LEEJO/CGI-5.00/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
github.com/leejo/CGI.pm/commit/17b838dc14d2b82ae6c7e76f66ec2c3f3b08038b.... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
github.com/leejo/CGI.pm/commit/277baeb74fde7bce975a7bd0a1f98dcf1b9b2050.... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
github.com/leejo/CGI.pm/commit/8940a74e53a41563f72813b45f99cceaaa4c92e8.... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to CGI 5.00 or later.

Workarounds

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

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