Auth bypass in Lycheeorg Lychee
CVE-2026-22784
Lychee is a free, open-source photo-management tool. Prior to 7.1.0, an authorization vulnerability exists in Lychee's album password unlock functionality that allows users to gain possibly unauthorized access to other users' password-protected albums. When a user unlocks a password-protected public album, the system automatically unlocks ALL other public albums that share the same password, resulting in a complete authorization bypass. This vulnerability is fixed in 7.1.0.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (16.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 17th percentile — 16.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.000
Affected products
- Lycheeorg Lychee — versions < 7.1.0
Weakness classification (CWE)
References
- github.com/LycheeOrg/Lychee/security/advisories/GHSA-jj56-2c54-4f25 (Exploit, Third Party Advisory)
- github.com/LycheeOrg/Lychee/commit/f021a29f9ab2bafa81d9f5e32ff5bc89915c7d41 (Patch)
Frequently asked questions
- What is CVE-2026-22784?
- CVE-2026-22784 is a medium-severity vulnerability in Lycheeorg Lychee, classified under Incorrect Authorization. CVSS score: 4.3/10. Published 2026-01-12.
- How severe is CVE-2026-22784?
- Medium severity. CVSS v3 base score is 4.3 out of 10.