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  4. CVE 2026 107794 extutilstypemapsstllist versions before 107 for
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Back to active CVEs
Unknown severity · Source severity not reportedCVE-2026-107794

ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty listCVE-2026-107794

Answer in brief

CVE-2026-107794 records a Unknown severity vulnerability in ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list. The current sources do not mark it as known exploited. The current feed maps ExtUtils-Typemaps-Default (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 10, 2026Updated Oct 10, 2026Source checked Oct 10, 2026First seen by HOL Oct 10, 2026Material review Oct 10, 2026
Upstream Advisory

Key facts

Risk
Unknown severitySource severity not reported
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps ExtUtils-Typemaps-Default (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
ExtUtils-Typemaps-Defaultgeneric>=0 <1.071.07

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for ExtUtils-Typemaps-Default.
  2. 2Review the reported fix. Source-reported solution: Upgrade to ExtUtils::Typemaps::Default version 1.07 or later. Rebuild any modules that use ExtUtils::Typemaps::Default as part of their build process.

Evidence timeline and material changes

  1. Published upstream

    Oct 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 10, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 10, 2026

Sources and claim methodology

  • Source referencemetacpan.org
  • Source referencert.cpan.org
  • Source referencecve.org
Upstream source description

ExtUtils::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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • ExtUtils::Typemaps::STL::Vector versions before 1.05 for Perl allocate a 32 GiB array on an empty listSame extutils-typemaps-default package
  • ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argumentSame extutils-typemaps-default package
  • Apache DataSketches: datasketches-cpp: Out-of-bounds read in VarOpt union deserialization allows denial of service via a truncated sketchAlso CWE-191
  • FunnelKit <= 3.16.0.5 - Unauthenticated Stored Cross-Site Scripting via Order Fields (shipping/billing)Same generic ecosystem
  • WPAdverts <= 2.3.4 - Unauthenticated Stored Cross-Site Scripting via 'adverts_location' ParameterSame generic ecosystem
  • Molongui Authorship <= 5.2.12 - Unauthenticated Stored DOM-Based Cross-Site Scripting via Comment href AttributeSame generic ecosystem

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-191
Source
CVE List V5
Source checked
Oct 10, 2026
References
3 linked sources
Open source record