GHSA-92hv-j533-69wc Wagtail: Identification of documents by SHA1 hash
Attackers can determine if specific documents exist in Wagtail by comparing SHA1 hashes via HTTP headers, bypassing permission restrictions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-92hv-j533-69wc?
GHSA-92hv-j533-69wc is a vulnerability in wagtail, published on 20 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Impact
By passing specific HTTP headers to the document serve URL endpoint, an attacker was able to determine whether a document with a given ID matched a specified SHA1 hash, regardless of any permission restrictions on the document or knowing its filename. This could allow an attacker to determine whether a document with a specific known hash is present in the Wagtail document library.
This vulnerability does not expose the document's contents or any metadata beyond the already known SHA1 hash, and does not expose information about any documents for which the attacker does not know the SHA1 hash.
Patches
Patched versions have been released as Wagtail 7.0.9, 7.3.4, 7.4.3 and 8.0rc2.
Workarounds
Site owners who are unable to upgrade can strip If-Match and If-None-Match from anonymous requests to /documents/ at the reverse proxy, or use a custom document model without a file_hash attribute.
Acknowledgements
Many thanks to Anand Himanshu for reporting this issue.
For more information
If you have any questions or comments about this advisory:
- Visit Wagtail's support channels
- Email us at [email protected] (view our security policy for more information).
Which versions are affected by GHSA-92hv-j533-69wc?
8 open source packages ship an affected version, including wagtail.
| Package | Affected | Fixed in |
|---|---|---|
wagtail PyPI | All versions | 7.0.9 |
wagtail PyPI | All versions | 7.0.9 |
wagtail PyPI | From 7.1 | 7.3.4 |
wagtail PyPI | From 7.1 | 7.3.4 |
wagtail PyPI | From 7.4 | 7.4.3 |
wagtail PyPI | From 7.4 | 7.4.3 |
2 more packages
wagtail PyPI | From 8.0rc1 | 8.0rc2 |
wagtail PyPI | From 8.0rc1 | 8.0rc2 |
How do I fix GHSA-92hv-j533-69wc?
Upgrade wagtail to a fixed version for your release line: 7.0.9, 7.3.4, 7.4.3 or 8.0rc2.
Is GHSA-92hv-j533-69wc being exploited?
There is no known exploitation of GHSA-92hv-j533-69wc in the wild and no public exploit code.