Vulnerability in Wagtail
CVE-2026-123820
Wagtail is an open source content management system built on Django. Prior to 7.0.9, 7.3.4, 7.4.3, and 8.0rc2, the Wagtail Documents and Images API V2 excludes directly restricted collections but fails to exclude their descendant collections, even though descendants inherit ancestor view restrictions. An API user can therefore list the filenames and names of documents and images stored in descendant collections that should remain private. This issue is fixed in versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.
Published .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Wagtail — versions < 7.0.9, = 8.0rc1, >= 7.1, < 7.3.4
Weakness classification (CWE)
References
- github.com/wagtail/wagtail/security/advisories/GHSA-c2xx-cjmh-9q8f
- github.com/wagtail/wagtail/commit/320c37ed4624702d3864ce2364ce8536b2ce5115
- github.com/wagtail/wagtail/commit/9a69e0ad153c515ddd86ddd33d2c9d2554201568
- github.com/wagtail/wagtail/commit/b8a2040dfcdb97498b746254ad8bb4e47e21358c
- github.com/wagtail/wagtail/commit/cba80389067121c0fae41a3312e2daf76f0eb206
- github.com/wagtail/wagtail/releases/tag/v7.0.9
- github.com/wagtail/wagtail/releases/tag/v7.3.4
- github.com/wagtail/wagtail/releases/tag/v7.4.3
- github.com/wagtail/wagtail/releases/tag/v8.0rc2
Frequently asked questions
- What is CVE-2026-123820?
- CVE-2026-123820 is a medium-severity vulnerability in Wagtail, classified under Improper Handling of Insufficient Permissions or Privileges. CVSS score: 5.3/10. Published 2026-11-09.
- How severe is CVE-2026-123820?
- Medium severity. CVSS v3 base score is 5.3 out of 10.