CVE-2026-25517Medium▾ SunlitWagtail has improper permission handling on admin preview endpoints
▾ Sunlit zone — Low / medium · no exploitation signal
impact 27.5 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Jul 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via OSV
Last analysed / modified upstream
0.3%
0.3% → 0.4%
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.
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.
No workaround is available.
Many thanks to @thxtech for reporting this issue.
If there are any questions or comments about this advisory:
wagtail < 6.3.6wagtail >= 6.4rc1, < 7.0.4wagtail >= 7.1rc1, < 7.1.3wagtail >= 7.2rc1, < 7.2.2wagtail >= 7.3rc1, < 7.3Upgrade to a patched release:
wagtail 6.3.6wagtail 7.0.4wagtail 7.1.3wagtail 7.2.2wagtail 7.3Connected by shared product, vendor, weakness, or advisory.
CVE-2021-29434Medium· 6.1Improper validation of URLs ('Cross-site Scripting') in Wagtail rich text fields
CVE-2023-28836Medium· 6.4Wagtail vulnerable to stored Cross-site Scripting attack via ModelAdmin views
CVE-2023-28837Medium· 4.4Wagtail vulnerable to denial-of-service via memory exhaustion when uploading large files
CVE-2020-15118Medium· 5.7Cross-Site Scripting in Wagtail
CVE-2026-55468Medium· 4.3Wagtail: Improper restriction handling on Pages admin API
CVE-2026-28222Medium· 6.1Wagtail Vulnerable to Cross-site Scripting in TableBlock class attributes