CVE-2024-49767 (GCVE-0-2024-49767)

Vulnerability from cvelistv5 – Published: 2024-10-25 19:41 – Updated: 2026-05-20 22:24
VLAI
Title
Werkzeug possible resource exhaustion when parsing file data in forms
Summary
Werkzeug is a Web Server Gateway Interface web application library. Applications using `werkzeug.formparser.MultiPartParser` corresponding to a version of Werkzeug prior to 3.0.6 to parse `multipart/form-data` requests (e.g. all flask applications) are vulnerable to a relatively simple but effective resource exhaustion (denial of service) attack. A specifically crafted form submission request can cause the parser to allocate and block 3 to 8 times the upload size in main memory. There is no upper limit; a single upload at 1 Gbit/s can exhaust 32 GB of RAM in less than 60 seconds. Werkzeug version 3.0.6 fixes this issue.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-25 20:06 UTC
CWE
  • CWE-400 - Uncontrolled Resource Consumption
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Impacted products
Vendor Product Version CPE status
pallets werkzeug Affected: >= 2.0.0rc1, < 3.0.6
guessed Create a notification for this product.
pallets Quart Affected: < 0.20.0
guessed Create a notification for this product.
palletsprojects werkzeug Affected: 0 , < 3.0.6 (custom)
    cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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              "url": "https://github.com/pallets/quart/commit/5e78c4169b8eb66b91ead3e62d44721b9e1644ee"
            },
            {
              "name": "https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/pallets/quart/commit/abb04a512496206de279225340ed022852fbf51f"
            },
            {
              "name": "https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/pallets/werkzeug/commit/50cfeebcb0727e18cc52ffbeb125f4a66551179b"
            },
            {
              "name": "https://github.com/pallets/werkzeug/releases/tag/3.0.6",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/pallets/werkzeug/releases/tag/3.0.6"
            }
          ],
          "source": {
            "advisory": "GHSA-q34m-jh98-gwm2",
            "discovery": "UNKNOWN"
          },
          "title": "Werkzeug possible resource exhaustion when parsing file data in forms"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2024-49767",
        "datePublished": "2024-10-25T19:41:35.029Z",
        "dateReserved": "2024-10-18T13:43:23.457Z",
        "dateUpdated": "2026-05-20T22:24:47.608Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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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.

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Detection rules are retrieved from Rulezet.

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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.


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