ExtUtils::Typemaps::STL::List up to 1.6 Typemaps av_extend memory allocation

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k5.23+

Summaryinfo

A vulnerability classified as problematic was found in ExtUtils::Typemaps::STL::List up to 1.6. The impacted element is the function av_extend of the component Typemaps. Such manipulation leads to memory allocation. This vulnerability is uniquely identified as CVE-2026-107794. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in ExtUtils::Typemaps::STL::List up to 1.6 and classified as problematic. Affected by this issue is the function av_extend of the component Typemaps. The manipulation with an unknown input leads to a memory allocation vulnerability. Using CWE to declare the problem leads to CWE-789. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated. Impacted is availability. CVE summarizes:

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.

The advisory is shared for download at metacpan.org. This vulnerability is handled as CVE-2026-107794 since 10/08/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available.

Upgrading to version 1.07 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-96315). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory allocation
CWE: CWE-789 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: ExtUtils::Typemaps::STL::List 1.07

Timelineinfo

10/08/2026 CVE reserved
10/10/2026 +2 days Advisory disclosed
10/10/2026 +0 days VulDB entry created
10/10/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: metacpan.org
Status: Confirmed

CVE: CVE-2026-107794 (🔒)
GCVE (CVE): GCVE-0-2026-107794
GCVE (VulDB): GCVE-100-416192
EUVD: 🔒

Entryinfo

Created: 10/10/2026 15:10
Updated: 10/10/2026 17:41
Changes: 10/10/2026 15:10 (54), 10/10/2026 17:41 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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