CVE-2026-107794

Status: DeferredUnscored—

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.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.18%
Percentile among all scored CVEs: 8
Score date: 10/15/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Extutiuls Typemaps STL List Project — Extutiols Typemaps STL List^AI

CWEs

CWE-191

References

Raw JSON (NVD)

Show

{
  "id": "CVE-2026-107794",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "repo": "https://github.com/tsee/extutils-typemap-default",
          "modules": [
            "ExtUtils::Typemaps::STL::List"
          ],
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.07",
              "versionType": "custom"
            }
          ],
          "packageURL": "pkg:cpan/ExtUtils-Typemaps-Default",
          "packageName": "ExtUtils-Typemaps-Default",
          "programFiles": [
            "lib/ExtUtils/Typemaps/STL/List.pm"
          ],
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-10-10T13:17:31.357",
  "references": [
    {
      "url": "https://metacpan.org/release/SMUELLER/ExtUtils-Typemaps-Default-1.07/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://rt.cpan.org/Public/Bug/Display.html?id=91213",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://www.cve.org/CVERecord?id=CVE-2013-10076",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "description": [
        {
          "lang": "en",
          "value": "CWE-191"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ExtUtils::Typemaps::STL::List versions before 1.07 for Perl allocate a 32 GiB array on an empty list.\n\nThe 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.\n\nNote that a similar issue was fixed in ExtUtils::Typemaps::STL::Vector version 1.05."
    }
  ],
  "lastModified": "2026-10-15T14:42:22.220",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
}