Vulnerability-Lookup

GHSA-5426-92W4-WVHV

Vulnerability from github – Published: 2026-09-23 21:48 – Updated: 2026-09-23 21:48

Summary

plone.app.dexterity has a Denial of Service due to excessive title or description length

Details

Impact

When creating content with a very large title or description field, Plone can become unresponsive. Even if the content loads, it can be hard to edit or delete, because the UI is unwieldy.

Patches

The problem has been patched in plone.app.dexterity.

On Plone 6.2, upgrade to plone.app.dexterity 5.0.1.
On Plone 6.1, upgrade to plone.app.dexterity 4.1.3.
On Plone 6.0, upgrade to plone.app.dexterity 3.2.3.

Another part of this problem has been patched in plone.app.contenttypes. See this advisory.

Workarounds

There are no known workarounds.

This problem was responsibly reported by Aldin Visnjic to the Plone/Zope Security Team. Thank you!

Note: The Plone/Zope Security team felt that the kind of fixes that were needed could be disruptive in corner cases if they were not careful. So they decided to develop the fixes publicly, giving the whole community the chance the review, and giving them the benefit from early feedback.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "plone.app.dexterity"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0.0"
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 4.1.2"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "plone.app.dexterity"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0"
            },
            {
              "fixed": "4.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.2.2"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "plone.app.dexterity"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-57576"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-23T21:48:22Z",
    "nvd_published_at": "2026-09-22T23:17:07Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nWhen creating content with a very large title or description field, Plone can become unresponsive. Even if the content loads, it can be hard to edit or delete, because the UI is unwieldy.\n\n### Patches\nThe problem has been patched in `plone.app.dexterity`.\n\n* On Plone 6.2, upgrade to `plone.app.dexterity` 5.0.1.\n* On Plone 6.1, upgrade to `plone.app.dexterity` 4.1.3.\n* On Plone 6.0, upgrade to `plone.app.dexterity` 3.2.3.\n\nAnother part of this problem has been patched in `plone.app.contenttypes`. See [this advisory](https://github.com/plone/plone.app.contenttypes/security/advisories/GHSA-8pcw-h6w9-h46g).\n\n### Workarounds\nThere are no known workarounds.\n\nThis problem was responsibly reported by Aldin Visnjic to the [Plone/Zope Security Team](mailto:security@plone.org). Thank you!\n\nNote: The Plone/Zope Security team felt that the kind of fixes that were needed could be disruptive in corner cases if they were not careful. So they decided to develop the fixes publicly, giving the whole community the chance the review, and giving them the benefit from early feedback.",
  "id": "GHSA-5426-92w4-wvhv",
  "modified": "2026-09-23T21:48:22Z",
  "published": "2026-09-23T21:48:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/security/advisories/GHSA-5426-92w4-wvhv"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-57576"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/pull/433"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/commit/0d317df663823445200d0569a66a95b7e4a9c50d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/commit/2fdceb120ca86682a408f3a14753cfcf5126d9d9"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/commit/411689047f9a3521899ae6992a9b0efbd0592a8f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/commit/cbcef731c0882146b9bf30688cdc639d879878fb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/commit/f3596538cf7670bb8bc27b0dfa0b1da41c8b8a3a"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/commit/fb45bfdb18f1dfb3ed55e477947a3df9a6ee9e20"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/plone/plone.app.dexterity"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/releases/tag/3.2.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/releases/tag/4.1.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/plone/plone.app.dexterity/releases/tag/5.0.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "plone.app.dexterity has a Denial of Service due to excessive title or description length"
}

CVE-2026-57576 (GCVE-0-2026-57576)

Vulnerability from cvelistv5 – Published: 2026-09-22 23:01 – Updated: 2026-09-22 23:01

Title

plone.app.dexterity and plone.app.contenttypes have a Denial of Service due to excessive title or description length

Summary

plone.app.dexterity is a content-type system for the Plone content management system, and plone.app.contenttypes provides Plone’s Dexterity-based content types. Plone.app.dexterity versions through 3.2.2, 4.0.0 through 4.1.2, and 5.0.0, and plone.app.contenttypes versions through 3.0.11, 4.0.0 through 4.0.9, and 5.0.0 are vulnerable to denial of service because an authenticated user can create content with excessively long titles, descriptions, or uploaded-file names, causing Plone to become unresponsive and potentially making the resulting content difficult to edit or delete. The vulnerability is patched in plone.app.dexterity versions 3.2.3, 4.1.3, and 5.0.1, and in plone.app.contenttypes versions 3.0.12, 4.0.10, and 5.0.1.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

GitHub_M mitre root

References

13 references

URL	Tags
https://github.com/plone/plone.app.dexterity/secu…	x_refsource_CONFIRM
https://github.com/plone/plone.app.contenttypes/s…	x_refsource_MISC
https://github.com/plone/plone.app.contenttypes/c…	x_refsource_MISC
https://github.com/plone/plone.app.contenttypes/c…	x_refsource_MISC
https://github.com/plone/plone.app.contenttypes/c…	x_refsource_MISC
https://github.com/plone/plone.app.contenttypes/c…	x_refsource_MISC
https://github.com/plone/plone.app.contenttypes/c…	x_refsource_MISC
https://github.com/plone/plone.app.dexterity/comm…	x_refsource_MISC
https://github.com/plone/plone.app.dexterity/comm…	x_refsource_MISC
https://github.com/plone/plone.app.dexterity/comm…	x_refsource_MISC
https://github.com/plone/plone.app.dexterity/comm…	x_refsource_MISC
https://github.com/plone/plone.app.dexterity/comm…	x_refsource_MISC
https://github.com/plone/plone.app.dexterity/comm…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
plone	plone.app.dexterity	Affected: = 5.0.0 Affected: >= 4.0.0, < 4.1.3 Affected: < 3.2.3
plone	plone.app.contenttypes	Affected: = 5.0.0 Affected: >= 4.0.0, < 4.0.10 Affected: < 3.0.12

Show details on NVD website

JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "plone.app.dexterity",
          "vendor": "plone",
          "versions": [
            {
              "status": "affected",
              "version": "= 5.0.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c 4.1.3"
            },
            {
              "status": "affected",
              "version": "\u003c 3.2.3"
            }
          ]
        },
        {
          "product": "plone.app.contenttypes",
          "vendor": "plone",
          "versions": [
            {
              "status": "affected",
              "version": "= 5.0.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.0.0, \u003c 4.0.10"
            },
            {
              "status": "affected",
              "version": "\u003c 3.0.12"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "plone.app.dexterity is a content-type system for the Plone content management system, and plone.app.contenttypes provides Plone\u2019s Dexterity-based content types. Plone.app.dexterity versions through 3.2.2, 4.0.0 through 4.1.2, and 5.0.0, and plone.app.contenttypes versions through 3.0.11, 4.0.0 through 4.0.9, and 5.0.0 are vulnerable to denial of service because an authenticated user can create content with excessively long titles, descriptions, or uploaded-file names, causing Plone to become unresponsive and potentially making the resulting content difficult to edit or delete. The vulnerability is patched in plone.app.dexterity versions 3.2.3, 4.1.3, and 5.0.1, and in plone.app.contenttypes versions 3.0.12, 4.0.10, and 5.0.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-400",
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-22T23:01:22.308Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/plone/plone.app.dexterity/security/advisories/GHSA-5426-92w4-wvhv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/plone/plone.app.dexterity/security/advisories/GHSA-5426-92w4-wvhv"
        },
        {
          "name": "https://github.com/plone/plone.app.contenttypes/security/advisories/GHSA-8pcw-h6w9-h46g",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.contenttypes/security/advisories/GHSA-8pcw-h6w9-h46g"
        },
        {
          "name": "https://github.com/plone/plone.app.contenttypes/commit/13dc98a578341aac24a1e65fd9bc7ac8a07d168a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.contenttypes/commit/13dc98a578341aac24a1e65fd9bc7ac8a07d168a"
        },
        {
          "name": "https://github.com/plone/plone.app.contenttypes/commit/21bae6ebe424689eeac9a5884fc0da35f4944e63",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.contenttypes/commit/21bae6ebe424689eeac9a5884fc0da35f4944e63"
        },
        {
          "name": "https://github.com/plone/plone.app.contenttypes/commit/639c0619f371df578e69ec94e5ca98e60fd6ed58",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.contenttypes/commit/639c0619f371df578e69ec94e5ca98e60fd6ed58"
        },
        {
          "name": "https://github.com/plone/plone.app.contenttypes/commit/7bb03e8ec6c6bd0e645f445b0755e85a51afb158",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.contenttypes/commit/7bb03e8ec6c6bd0e645f445b0755e85a51afb158"
        },
        {
          "name": "https://github.com/plone/plone.app.contenttypes/commit/bed1547d4f8b1fc995f2c76f30ba5f20276a8ad6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.contenttypes/commit/bed1547d4f8b1fc995f2c76f30ba5f20276a8ad6"
        },
        {
          "name": "https://github.com/plone/plone.app.dexterity/commit/0d317df663823445200d0569a66a95b7e4a9c50d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.dexterity/commit/0d317df663823445200d0569a66a95b7e4a9c50d"
        },
        {
          "name": "https://github.com/plone/plone.app.dexterity/commit/2fdceb120ca86682a408f3a14753cfcf5126d9d9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.dexterity/commit/2fdceb120ca86682a408f3a14753cfcf5126d9d9"
        },
        {
          "name": "https://github.com/plone/plone.app.dexterity/commit/411689047f9a3521899ae6992a9b0efbd0592a8f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.dexterity/commit/411689047f9a3521899ae6992a9b0efbd0592a8f"
        },
        {
          "name": "https://github.com/plone/plone.app.dexterity/commit/cbcef731c0882146b9bf30688cdc639d879878fb",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.dexterity/commit/cbcef731c0882146b9bf30688cdc639d879878fb"
        },
        {
          "name": "https://github.com/plone/plone.app.dexterity/commit/f3596538cf7670bb8bc27b0dfa0b1da41c8b8a3a",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.dexterity/commit/f3596538cf7670bb8bc27b0dfa0b1da41c8b8a3a"
        },
        {
          "name": "https://github.com/plone/plone.app.dexterity/commit/fb45bfdb18f1dfb3ed55e477947a3df9a6ee9e20",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/plone/plone.app.dexterity/commit/fb45bfdb18f1dfb3ed55e477947a3df9a6ee9e20"
        }
      ],
      "source": {
        "advisory": "GHSA-5426-92w4-wvhv",
        "discovery": "UNKNOWN"
      },
      "title": "plone.app.dexterity and plone.app.contenttypes have a Denial of Service due to excessive title or description length"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57576",
    "datePublished": "2026-09-22T23:01:22.308Z",
    "dateReserved": "2026-06-24T18:49:56.208Z",
    "dateUpdated": "2026-09-22T23:01:22.308Z",
    "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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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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