CVE-2026-107373 (GCVE-0-2026-107373)

Vulnerability from cvelistv5 – Published: 2026-10-10 12:44 – Updated: 2026-10-10 12:44
VLAI
Title
ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument
Summary
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.
Severity
No CVSS data available.
CWE
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 64/100 over 267 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Affected: 0 , < 1.06 (custom)
Show details on NVD website
To clipboard 

{
  "containers": {
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        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "ExtUtils::Typemaps::STL::String"
          ],
          "packageName": "ExtUtils-Typemaps-Default",
          "packageURL": "pkg:cpan/ExtUtils-Typemaps-Default",
          "programFiles": [
            "lib/ExtUtils/Typemaps/STL/String.pm"
          ],
          "repo": "https://github.com/tsee/extutils-typemap-default",
          "versions": [
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              "lessThan": "1.06",
              "status": "affected",
              "version": "0",
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument.\n\nThe typemap uses\n\n    $var = std::string( SvPV_nolen($arg), SvCUR($arg) )\n\nHowever, evaluation order for C++ arguments is not specified, and some compilers may produce code that evalutes SvCUR($arg) first.\n\nWhen $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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125 Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-10T12:44:08.099Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/SMUELLER/ExtUtils-Typemaps-Default-1.06/changes"
        },
        {
          "url": "https://github.com/tsee/extutils-typemap-default/commit/a6b9c298b34ddadc582961403e715d292f82a22d"
        },
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          "tags": [
            "issue-tracking"
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          "url": "https://rt.cpan.org/Public/Bug/Display.html?id=94110"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-80490"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to ExtUtils::Typemaps::Default version 1.06 or later.\n\nRebuild any modules that use ExtUtils::Typemaps::Default as part of their build process."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2014-03-22T00:00:00.000Z",
          "value": "Issue reported in bugtracker for ExtUtils::Typemaps::Default version 1.05."
        },
        {
          "lang": "en",
          "time": "2014-06-10T00:00:00.000Z",
          "value": "Fix committed to the repository. Bugtracker issue closed."
        },
        {
          "lang": "en",
          "time": "2026-09-30T00:00:00.000Z",
          "value": "Issue reported to CPANSec."
        },
        {
          "lang": "en",
          "time": "2026-10-08T00:00:00.000Z",
          "value": "ExtUtils::Typemaps::Default version 1.06 released with a fix."
        }
      ],
      "title": "ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument",
      "workarounds": [
        {
          "lang": "en",
          "value": "For deployments that cannot be upgraded, ensure that arguments passed to modules that use ExtUtils::Typemaps::Default are strngified."
        }
      ],
      "x_generator": {
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    "cveId": "CVE-2026-107373",
    "datePublished": "2026-10-10T12:44:08.099Z",
    "dateReserved": "2026-10-07T21:01:49.472Z",
    "dateUpdated": "2026-10-10T12:44:08.099Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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                "programFiles": [
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        "descriptions": [
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            "value": "ExtUtils::Typemaps::STL::String versions before 1.06 for Perl T_STD_STRING typemap may read the SV length before stringifying the argument.\n\nThe typemap uses\n\n    $var = std::string( SvPV_nolen($arg), SvCUR($arg) )\n\nHowever, evaluation order for C++ arguments is not specified, and some compilers may produce code that evalutes SvCUR($arg) first.\n\nWhen $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."
          }
        ],
        "id": "CVE-2026-107373",
        "lastModified": "2026-10-10T13:17:31.253",
        "metrics": {},
        "published": "2026-10-10T13:17:31.253",
        "references": [
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      }
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  }
}



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