GHSA-4QVV-G3VR-M348

Vulnerability from github – Published: 2026-02-03 18:35 – Updated: 2026-02-04 21:58
VLAI?
Summary
Wagtail has improper permission handling on admin preview endpoints
Details

Impact

Due to a missing permission check on the preview endpoints, a user with access to the Wagtail admin and knowledge of a model's fields can craft a form submission to obtain a preview rendering of any page, snippet or site setting object for which previews are enabled, consisting of any data of the user's choosing. The existing data of the object itself is not exposed, but depending on the nature of the template being rendered, this may expose other database contents that would otherwise only be accessible to users with edit access over the model. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin.

Patches

Patched versions have been released as Wagtail 6.3.6, 7.0.4, 7.1.3 and 7.2.2. The new 7.3 feature release also incorporates this fix.

Workarounds

No workaround is available.

Acknowledgements

Many thanks to @thxtech for reporting this issue.

For more information

If there are any questions or comments about this advisory:

Severity ?
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "wagtail"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.3.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 7.0.3"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "wagtail"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.4rc1"
            },
            {
              "fixed": "7.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 7.1.2"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "wagtail"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.1rc1"
            },
            {
              "fixed": "7.1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 7.2.1"
      },
      "package": {
        "ecosystem": "PyPI",
        "name": "wagtail"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.2rc1"
            },
            {
              "fixed": "7.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "wagtail"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7.3rc1"
            },
            {
              "fixed": "7.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.3rc1"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25517"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-03T18:35:52Z",
    "nvd_published_at": "2026-02-04T21:16:02Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nDue to a missing permission check on the preview endpoints, a user with access to the Wagtail admin and knowledge of a model\u0027s fields can craft a form submission to obtain a preview rendering of any page, snippet or site setting object for which previews are enabled, consisting of any data of the user\u0027s choosing. The existing data of the object itself is not exposed, but depending on the nature of the template being rendered, this may expose other database contents that would otherwise only be accessible to users with edit access over the model. The vulnerability is not exploitable by an ordinary site visitor without access to the Wagtail admin.\n\n### Patches\nPatched versions have been released as Wagtail 6.3.6, 7.0.4, 7.1.3 and 7.2.2. The new 7.3 feature release also incorporates this fix.\n\n### Workarounds\nNo workaround is available.\n\n### Acknowledgements\n\nMany thanks to @thxtech for reporting this issue.\n\n### For more information\n\nIf there are any questions or comments about this advisory:\n\n- Visit Wagtail\u0027s [support channels](https://docs.wagtail.io/en/stable/support.html)\n- Send an email to [security@wagtail.org](mailto:security@wagtail.org) (view our [security policy](https://github.com/wagtail/wagtail/security/policy) for more information).",
  "id": "GHSA-4qvv-g3vr-m348",
  "modified": "2026-02-04T21:58:34Z",
  "published": "2026-02-03T18:35:52Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/security/advisories/GHSA-4qvv-g3vr-m348"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25517"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/commit/01fd3477365a193e6a8270311defb76e890d2719"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/commit/5f09b6da61e779b0e8499bdbba52bf2f7bd3241f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/commit/73f070dbefbd3b39ea6649ce36bd2d2a6eef2190"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/commit/7dfe8de5f8b3f112c73c87b6729197db16454915"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/commit/dd824023a031f1b82a6b6f83a97a5c73391b7c03"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/wagtail/wagtail"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/releases/tag/v6.3.6"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/releases/tag/v7.0.4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/releases/tag/v7.1.3"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/releases/tag/v7.2.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/wagtail/wagtail/releases/tag/v7.3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Wagtail has improper permission handling on admin preview endpoints"
}


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Sightings

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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.



Detection rules are retrieved from Rulezet.