CVE-2026-116273 (GCVE-0-2026-116273)

Vulnerability from cvelistv5 – Published: 2026-10-28 17:34 – Updated: 2026-10-28 17:34
VLAI
Title
MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion
Summary
MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion. The max_parts option defaulted to -1, which disables the limit, so a parser created with default settings builds an entity for every part however many a message has. Version 5.521 sets max_parts to 1000 and max_depth to 64 by default. Setting either to -1 still removes the limit.
Severity
No CVSS data available.
CWE
  • CWE-1188 - Initialization of a Resource with an Insecure Default
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
CPANSec CNA under the redhat root
CNA scorecard C 63/100 over 317 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Affected: 0 , < 5.521 (custom)
Show details on NVD website
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.pm"
          ],
          "programRoutines": [
            {
              "name": "MIME::Parser::init"
            },
            {
              "name": "MIME::Parser::process_part"
            }
          ],
          "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 set no limit on the number of message parts by default, allowing memory exhaustion.\n\nThe max_parts option defaulted to -1, which disables the limit, so a parser created with default settings builds an entity for every part however many a message has.\n\nVersion 5.521 sets max_parts to 1000 and max_depth to 64 by default. Setting either to -1 still removes the limit."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1188",
              "description": "CWE-1188 Initialization of a Resource with an Insecure Default",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-770",
              "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T17:34:44.660Z",
        "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 set no limit on the number of message parts by default, allowing memory exhaustion",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-116273",
    "datePublished": "2026-10-28T17:34:44.660Z",
    "dateReserved": "2026-10-25T18:05:02.236Z",
    "dateUpdated": "2026-10-28T17:34:44.660Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://cpan.org/modules",
                "defaultStatus": "unaffected",
                "modules": [
                  "MIME::Parser"
                ],
                "packageName": "MIME-tools",
                "packageURL": "pkg:cpan/MIME-tools",
                "programFiles": [
                  "lib/MIME/Parser.pm"
                ],
                "programRoutines": [
                  {
                    "name": "MIME::Parser::init"
                  },
                  {
                    "name": "MIME::Parser::process_part"
                  }
                ],
                "repo": "https://salsa.debian.org/dskoll/mime-tools",
                "versions": [
                  {
                    "lessThan": "5.521",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "MIME::Parser versions before 5.521 for Perl set no limit on the number of message parts by default, allowing memory exhaustion.\n\nThe max_parts option defaulted to -1, which disables the limit, so a parser created with default settings builds an entity for every part however many a message has.\n\nVersion 5.521 sets max_parts to 1000 and max_depth to 64 by default. Setting either to -1 still removes the limit."
          }
        ],
        "id": "CVE-2026-116273",
        "lastModified": "2026-10-28T18:17:13.797",
        "metrics": {},
        "published": "2026-10-28T18:17:13.797",
        "references": [
          {
            "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
            "url": "https://metacpan.org/release/DSKOLL/MIME-tools-5.521/changes"
          }
        ],
        "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "vulnStatus": "Received",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-770"
              },
              {
                "lang": "en",
                "value": "CWE-1188"
              }
            ],
            "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
            "type": "Secondary"
          }
        ]
      }
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    Related by attack behaviour

    Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.