CVE WatchOct 16, 2026

CVE-2026-107373

ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument.

CVSS

9.1

Critical

EPSS

0.4%

p33

KEV

—

Exploit Today

0-100

Published: Oct 10, 2026 · Last modified: Oct 16, 2026 · CWE-125

EPSS · 30d

0.2%EPSS · 30 days0.4%

2026-10-112026-10-23

Technical description

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 $var = std::string( SvPV_nolen($arg), SvCUR($arg) ) However, evaluation order for C++ arguments is not specified, and some compilers may produce code that evalutes SvCUR($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.

Official references

Related CVEs

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