CVE-2026-107794
ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list
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.
- Record
CVE-2026-107794- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-191
- Updated
- 2026-11-02
EUVDEUVD-2026-96315
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.
- Record
EUVD-2026-96315- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-h5wv-6qvp-x98v
ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty...
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.
- Record
GHSA-h5wv-6qvp-x98v- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-191
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-107794- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-191
- Updated
- 2026-11-02
OSV
ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list
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.
- Record
CVE-2026-107794- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-191
- Updated
- 2026-11-04
OSVDEBIAN-CVE-2026-107794
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.
- Record
DEBIAN-CVE-2026-107794- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2026-107794
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.
- Record
UBUNTU-CVE-2026-107794- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVMGASA-2026-0544 No score
Updated perl-ExtUtils-Typemaps-Default package fixes security vulnerabilities
ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument. (CVE-2026-107373) ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list. (CVE-2026-107794)
- Record
MGASA-2026-0544- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:12404-1 No score
perl-ExtUtils-Typemaps-Default-1.70.0-1.1 on GA media
These are all security issues fixed in the perl-ExtUtils-Typemaps-Default-1.70.0-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:12404-1- Updated
- 2026-11-04
Affected packages
| Package | Affected | Fixed |
|---|---|---|
libextutils-typemaps-default-perlDebian:12 |
All versions, plus listed versions 1.05-51.07-1 |
None known |
libextutils-typemaps-default-perlDebian:13 |
All versions, plus listed versions 1.05-51.07-1 |
None known |
libextutils-typemaps-default-perlDebian:14 |
before 1.07-1, plus listed versions 1.05-5 |
1.07-1 |
perl-ExtUtils-Typemaps-DefaultMageia:10 From an advisory covering 2 CVEs |
before 1.70.0-1.mga10 | 1.70.0-1.mga10 |
libextutils-typemaps-default-perlUbuntu:16.04:LTS |
All versions, plus listed versions 1.05-2 |
None known |
libextutils-typemaps-default-perlUbuntu:18.04:LTS |
All versions, plus listed versions 1.05-2 |
None known |
libextutils-typemaps-default-perlUbuntu:20.04:LTS |
All versions, plus listed versions 1.05-2 |
None known |
libextutils-typemaps-default-perlUbuntu:22.04:LTS |
All versions, plus listed versions 1.05-2.1 |
None known |
libextutils-typemaps-default-perlUbuntu:24.04:LTS |
All versions, plus listed versions 1.05-5 |
None known |
libextutils-typemaps-default-perlUbuntu:26.10 |
All versions, plus listed versions 1.05-5 |
None known |
libextutils-typemaps-default-perlUbuntu:26.04:LTS |
All versions, plus listed versions 1.05-5 |
None known |
perl-ExtUtils-Typemaps-DefaultopenSUSE:Tumbleweed From an advisory covering 2 CVEs |
before 1.70.0-1.1 | 1.70.0-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| affected, aliases, facts, references | OSV | |
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-107794 is a high vulnerability (CVSS 7.5) in libextutils-typemaps-default-perl, published October 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. Fixed in libextutils-typemaps-default-perl 1.07-1.
References
metacpan.org/release/SMUELLER/ExtUtils-Typemaps-Default-1.07/changes
rt.cpan.org/Public/Bug/Display.html?id=91213
cve.org/CVERecord?id=CVE-2013-10076
nvd.nist.gov/vuln/detail/CVE-2026-107794
github.com/advisories/GHSA-h5wv-6qvp-x98v
cpan.org/modules
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security-tracker.debian.org/tracker/CVE-2026-107794
advisories.mageia.org/MGASA-2026-0544.html
bugs.mageia.org/show_bug.cgi?id=36504
openwall.com/lists/oss-security/2026/10/10/7
lists.fedoraproject.org/archives/list/[email protected]/message/YRN5O43U7BVSD6AUJJF2XIVIIYTDQO6I
ubuntu.com/security/CVE-2026-107794
bugs.debian.org/cgi-bin/bugreport.cgi?bug=1150541
suse.com/security/cve/CVE-2026-107373