EUVD-2026-19673
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Lifecycle Timeline
3Description
Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.4, RecipeBookViewSet and RecipeBookEntryViewSet use CustomIsShared as an alternative permission class, but CustomIsShared.has_object_permission() returns True for all HTTP methods - including DELETE, PUT, and PATCH - without checking request.method in SAFE_METHODS. Any user who is in the shared list of a RecipeBook can delete or overwrite it, even though shared access is semantically read-only. This vulnerability is fixed in 2.6.4.
Analysis
Privilege escalation in Tandoor Recipes prior to version 2.6.4 allows authenticated users with read-only shared access to recipe books to perform unauthorized write and delete operations. The CustomIsShared permission class incorrectly permits DELETE, PUT, and PATCH methods without validating safe HTTP methods, enabling shared users to overwrite or delete recipe books despite having semantically read-only permissions. …
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Remediation
Within 24 hours: Inventory all Tandoor Recipes deployments and document current versions and read-only shared user accounts. Within 7 days: Restrict shared recipe book access to essential personnel only; review audit logs for unauthorized PUT, PATCH, or DELETE operations on recipe books by read-only users. …
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External POC / Exploit Code
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