ghsa-7mpr-5m44-h73r

Vulnerability from github

Published

2025-04-27 00:30

Modified

2025-04-28 14:34

Severity ?

2.9 (Low) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Summary

markdownify allows large headline prefixes such as <h9999999>, which causes memory consumption

Details

python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as in addition to

through

. This causes memory consumption.

Show details on source website

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "markdownify"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.14.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-46656"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-28T14:34:51Z",
    "nvd_published_at": "2025-04-26T22:15:17Z",
    "severity": "LOW"
  },
  "details": "python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as \u003ch9999999\u003e in addition to \u003ch1\u003e through \u003ch6\u003e. This causes memory consumption.",
  "id": "GHSA-7mpr-5m44-h73r",
  "modified": "2025-04-28T14:34:51Z",
  "published": "2025-04-27T00:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-46656"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matthewwithanm/python-markdownify/issues/143"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matthewwithanm/python-markdownify/commit/959561879693bf4a576f99c6733b50b01186aa08"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/matthewwithanm/python-markdownify"
    },
    {
      "type": "WEB",
      "url": "https://github.com/matthewwithanm/python-markdownify/compare/0.14.0...0.14.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "markdownify allows large headline prefixes such as \u003ch9999999\u003e, which causes memory consumption"
}

CVE-2025-46656 (GCVE-0-2025-46656)

Vulnerability from cvelistv5

Published

2025-04-26 00:00

Modified

2025-04-29 15:22

Severity ?

2.9 (Low) - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-1284 - Improper Validation of Specified Quantity in Input

Summary

python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as <h9999999> in addition to <h1> through <h6>. This causes memory consumption.

References

URL

Tags

	https://github.com/matthewwithanm/python-markdownify/compare/0.14.0...0.14.1
	https://github.com/matthewwithanm/python-markdownify/issues/143

Impacted products

	Vendor	Product	Version
	python-markdownify	python-markdownify	Version: 0 ≤

Show details on NVD website

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-46656",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-29T14:57:00.669717Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-04-29T15:22:30.630Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/matthewwithanm/python-markdownify/issues/143"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "python-markdownify",
          "vendor": "python-markdownify",
          "versions": [
            {
              "lessThan": "0.14.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "python-markdownify (aka markdownify) before 0.14.1 allows large headline prefixes such as \u003ch9999999\u003e in addition to \u003ch1\u003e through \u003ch6\u003e. This causes memory consumption."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 2.9,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1284",
              "description": "CWE-1284 Improper Validation of Specified Quantity in Input",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-04-26T21:28:33.270Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://github.com/matthewwithanm/python-markdownify/compare/0.14.0...0.14.1"
        },
        {
          "url": "https://github.com/matthewwithanm/python-markdownify/issues/143"
        }
      ],
      "x_generator": {
        "engine": "enrichogram 0.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2025-46656",
    "datePublished": "2025-04-26T00:00:00.000Z",
    "dateReserved": "2025-04-26T00:00:00.000Z",
    "dateUpdated": "2025-04-29T15:22:30.630Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Log in or create an account to share your comment.

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.