Access Control Vulnerability in Wagtail Content Management System
CVE-2026-123820

5.3MEDIUM

Key Information:

Vendor

Wagtail

Status
Wagtail
Vendor
CVE Published:
9 November 2026

What is CVE-2026-123820?

An access control vulnerability exists within the Wagtail Documents and Images API V2, where direct restrictions on collections do not prevent access to their descendant collections. This failure exposes sensitive file names and document details that should remain confidential, potentially leading to unauthorized access. The issue is resolved in subsequent releases including versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.

Affected Version(s)

wagtail < 7.0.9 < 7.0.9

wagtail >= 7.1, < 7.3.4 < 7.1, 7.3.4

wagtail >= 7.4, < 7.4.3 < 7.4, 7.4.3

References

https://github.com/wagtail/wagtail/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/wagtail/wagtail/commit/320c37ed4624702...
x_refsource_MISC
https://github.com/wagtail/wagtail/commit/9a69e0ad153c515...
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.