Vulnerability-Lookup

GHSA-G3MM-4GGM-MRV5

Vulnerability from github – Published: 2026-10-10 15:30 – Updated: 2026-10-10 15:30

Details

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.

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-107373"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-10T13:17:31Z",
    "severity": null
  },
  "details": "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": "GHSA-g3mm-4ggm-mrv5",
  "modified": "2026-10-10T15:30:22Z",
  "published": "2026-10-10T15:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107373"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tsee/extutils-typemap-default/commit/a6b9c298b34ddadc582961403e715d292f82a22d"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/SMUELLER/ExtUtils-Typemaps-Default-1.06/changes"
    },
    {
      "type": "WEB",
      "url": "https://rt.cpan.org/Public/Bug/Display.html?id=94110"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-80490"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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

Vulnerability from cvelistv5 – Published: 2026-10-10 12:44 – Updated: 2026-10-10 12:44

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

CWE-125 - Out-of-bounds Read

Assigner

CPANSec CNA under the redhat root

CNA scorecard C 64/100 over 267 records in the last 180 days details

References

4 references

URL	Tags
https://metacpan.org/release/SMUELLER/ExtUtils-Ty…	release-notes
https://github.com/tsee/extutils-typemap-default/…
https://rt.cpan.org/Public/Bug/Display.html?id=94110	issue-tracking
https://www.cve.org/CVERecord?id=CVE-2026-80490	related

Impacted products

1 product

Vendor	Product	Version
		Affected: 0 , < 1.06 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": [
            {
              "lessThan": "1.06",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "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"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "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": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "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"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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GHSA-G3MM-4GGM-MRV5

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

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