Description
Mealie before 3.21.0 fails to validate user ownership in the ratings and favorites endpoints, allowing authenticated attackers to read any user's recipe ratings and favorites by specifying arbitrary user IDs in the URL path. Attackers can access private recipe identifiers, rating values, and favorite flags belonging to other users across different groups or households.
References9
- github.com/mealie-recipes/mealie
- github.com/mealie-recipes/mealie/blob/v3.20.1/mealie/repos/repo…
- github.com/mealie-recipes/mealie/blob/v3.20.1/mealie/routes/use…
- github.com/mealie-recipes/mealie/commit/6889101a760a457019276c1…
- github.com/mealie-recipes/mealie/issues/7909
- github.com/mealie-recipes/mealie/pull/7903
- github.com/mealie-recipes/mealie/releases/tag/v3.21.0
- www.vulncheck.com/advisories/mealie-before-3.21.0-information-d…
- github.com/mealie-recipes/mealie/issues/7909
Metrics
- CVSS 3.1
-
4.3
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N - CVSS 4.0
-
5.3
MEDIUM
Score source: CNA
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 33 · as of 8 November 2026
- CWE
- CWE-639
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.