CVE-2026-55417

MediumCVSS 6.9/10Last modified Jul 10, 2026

Description

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.

Metrics

CVSS 4.0 6.9/10

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/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

Weakness enumeration

CWE-862

Affected software

Vendor	Product	Versions
chevereto	chevereto	>= 3.7.5, < 4.5.4
chevereto	chevereto/chevereto	>= 4.0.5, < 4.5.4
chevereto	rodber/chevereto-free	>= 1.0.0

References

Timeline

Published: Jul 7, 2026
Last modified: Jul 10, 2026
NVD status: Deferred

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