CVE-2026-107373
Published:October 10, 2026
Updated:October 13, 2026
ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument.
The typemap uses
However, evaluation order for C++ arguments is not specified, and some compilers may produce code that evalutes SvCUR($arg) first.
When $arg is not a string (for example, an interger, number or a reference) then SvCUR will return an invalid value, and the program may abort or segfault.
Affected Packages
https://github.com/tsee/extutils-typemap-default.git (GITHUB):
Affected version(s) >=ExtUtils-Typemaps-Default-1.00 <ExtUtils-Typemaps-Default-1.06Fix Suggestion:
Update to version ExtUtils-Typemaps-Default-1.06Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Out-of-bounds Read
EPSS
Base Score:
0.19