Vulnerability-Lookup

GHSA-4HX4-Q2MP-7H24

Vulnerability from github – Published: 2026-10-28 18:32 – Updated: 2026-10-28 18:32

Details

MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message.

Each stored parser diagnostic is indented by three spaces per nesting level. When a message nested N levels deep ends without its closing boundaries, every level logs an error at its own depth, so the stored diagnostics grow with the square of N. The defaults place no limit on nesting depth.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-116267"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-407"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-28T18:17:13Z",
    "severity": null
  },
  "details": "MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message.\n\nEach stored parser diagnostic is indented by three spaces per nesting level. When a message nested N levels deep ends without its closing boundaries, every level logs an error at its own depth, so the stored diagnostics grow with the square of N. The defaults place no limit on nesting depth.",
  "id": "GHSA-4hx4-q2mp-7h24",
  "modified": "2026-10-28T18:32:12Z",
  "published": "2026-10-28T18:32:12Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116267"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-116267 (GCVE-0-2026-116267)

Vulnerability from cvelistv5 – Published: 2026-10-28 17:32 – Updated: 2026-10-28 17:32

Title

MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message

Summary

MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message. Each stored parser diagnostic is indented by three spaces per nesting level. When a message nested N levels deep ends without its closing boundaries, every level logs an error at its own depth, so the stored diagnostics grow with the square of N. The defaults place no limit on nesting depth.

Severity

No CVSS data available.

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

CPANSec CNA under the redhat root

CNA scorecard C 62/100 over 346 records in the last 180 days details

References

1 reference

URL	Tags
https://metacpan.org/release/DSKOLL/MIME-tools-5.…	release-notes

Impacted products

1 product

Vendor	Product	Version
		Affected: 0 , < 5.521 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "MIME::Parser"
          ],
          "packageName": "MIME-tools",
          "packageURL": "pkg:cpan/MIME-tools",
          "programFiles": [
            "lib/MIME/Parser/Results.pm",
            "lib/MIME/Parser.pm"
          ],
          "programRoutines": [
            {
              "name": "MIME::Parser::Results::indent"
            }
          ],
          "repo": "https://salsa.debian.org/dskoll/mime-tools",
          "versions": [
            {
              "lessThan": "5.521",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message.\n\nEach stored parser diagnostic is indented by three spaces per nesting level. When a message nested N levels deep ends without its closing boundaries, every level logs an error at its own depth, so the stored diagnostics grow with the square of N. The defaults place no limit on nesting depth."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-407",
              "description": "CWE-407 Inefficient Algorithmic Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T17:32:45.677Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to MIME-tools 5.521 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "MIME::Parser versions before 5.521 for Perl allow memory exhaustion via indented error messages from a truncated, deeply nested message",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-116267",
    "datePublished": "2026-10-28T17:32:45.677Z",
    "dateReserved": "2026-10-25T18:05:02.235Z",
    "dateUpdated": "2026-10-28T17:32:45.677Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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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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