CVE-2026-55417Chevereto private profile setting leaks username on /json endpoint
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.9 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Jul 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
chevereto chevereto chevereto:chevereto (from the name) | from 3.7.5, < 4.5.4 | CNA record |
chevereto rodber/chevereto-free chevereto:rodber_chevereto_free (from the name) | from 1.0.0 | CNA record |
References
- https://github.com/chevereto/chevereto/security/advisories/GHSA-h4jp-mxfx-g8xpx-refsource-confirm
- https://chevereto.com/community/threads/chevereto-v4-5-4-announcement.16398/post-80153x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.