ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-107794
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-10 13:17:31 UTC
Updated2026-10-16 20:17:18 UTC
DescriptionExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list. The OUTPUT typemaps call av_extend( av, len-1 ). On an empty list, this undeflows, and av_extend will allocate an array with 2^32 slots, leading to memory exhaustion. Note that a similar issue was fixed in ExtUtils::Typemaps::STL::Vector version 1.05.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.001850000 probability, percentile 0.074930000 (date 2026-10-11)

Problem Types: CWE-191 | CWE-191 CWE-191 Integer Underflow (Wrap or Wraparound)

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

ReferenceSourceLinkTags
www.cve.org/CVERecord 9b29abf9-4ab0-4765-b253-1875cd9b441e www.cve.org
rt.cpan.org/Public/Bug/Display.html 9b29abf9-4ab0-4765-b253-1875cd9b441e rt.cpan.org
metacpan.org/release/SMUELLER/ExtUtils-Typemaps-Default-1.07/changes 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

SourceTimeEvent
CNA2013-12-06T07:04:44.000ZIssue with ExtUtils::Typemaps::STL::Vector reported for version 1.04.
CNA2013-12-06T17:43:00.000ZExtUtils::Typemaps::Default version 1.05 released with fix for CVE-2013-10076.
CNA2026-10-08T00:00:00.000ZIssue with ExtUtils::Typemaps::STL::List reported to CPANSec. CVE-2013-10076 assigned retroactively.
CNA2026-10-09T00:00:00.000ZExtUtils::Typemaps::Default version 1.07 released with fix for CVE-2026-107794.

Solutions

CNA: Upgrade to ExtUtils::Typemaps::Default version 1.07 or later. Rebuild any modules that use ExtUtils::Typemaps::Default as part of their build process.

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