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, Wagtail applies ETag conditional request processing to the document serve endpoint before document permission and filename checks complete. An unauthenticated attacker who knows a document ID and a candidate SHA1 hash can submit If-Match or If-None-Match and distinguish the response, revealing whether that hash is present in the document library.
The issue does not expose document contents, filenames, other metadata, or information about hashes the attacker does not already know. This issue is fixed in versions 7.0.9, 7.3.4, 7.4.3, and 8.0rc2.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 9
https://github.com/wagtail/wagtail/commit/2db8a92ab888467bdd008b8e098c3d94d7da2…
security-advisories@github.com
https://github.com/wagtail/wagtail/commit/a1402376889be87cfc413cf9f2694a547d2b7…
security-advisories@github.com
https://github.com/wagtail/wagtail/commit/c4c38746855a562f451838fbfe0c77dab2c61…
security-advisories@github.com
https://github.com/wagtail/wagtail/commit/f05649908fb727035108194792fb5e4f9bb6c…
security-advisories@github.com
https://github.com/wagtail/wagtail/releases/tag/v7.0.9
security-advisories@github.com
https://github.com/wagtail/wagtail/releases/tag/v7.3.4
security-advisories@github.com
https://github.com/wagtail/wagtail/releases/tag/v7.4.3
security-advisories@github.com
https://github.com/wagtail/wagtail/releases/tag/v8.0rc2
security-advisories@github.com
https://github.com/wagtail/wagtail/security/advisories/GHSA-92hv-j533-69wc
security-advisories@github.com