CVE-2026-55417
6.9
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Summary
Chevereto is a self-hosted media-sharing platform. Starting in version 3.7.5 and prior to version 4.5.4, when a user enables the private profile option, visiting their profile HTML route (/username) correctly returns 404. However, the /json AJAX listing endpoint does not apply the same check. An unauthenticated caller who knows the target's user ID can retrieve all of that user's publicly-scoped images, revealing the username (which should be private). This is patched in Chevereto v4.5.4. No known workarounds are available.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| chevereto | chevereto | >= 3.7.5, < 4.5.4 | affected |
| chevereto | chevereto/chevereto | >= 4.0.5, < 4.5.4 | affected |
| chevereto | rodber/chevereto-free | >= 1.0.0 | affected |
Weaknesses
- CWE-862: CWE-862: Missing Authorization
References
- https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xp
- https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153
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