What is CVE-2026-61611?

CVE-2026-61611 is a high-severity vulnerability in Lycheeorg Lychee, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2026-10-15.

How severe is CVE-2026-61611?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Lycheeorg Lychee

CVE-2026-61611

Lychee is a free, open-source photo-management tool. Prior to 7.6.1, POST /api/v2/Album::unlock has no throttle, attempt counter, backoff, CAPTCHA, or lockout. UnlockAlbumRequest::authorize() permits any caller to submit attempts, and app/Actions/Album/Unlock.php verifies each guess with Hash::check without limiting repeated failures. A remote unauthenticated attacker who knows or can obtain an album identifier can automate password guesses against a password-protected album and, if the password is recovered, gain access to its private photo collection. This issue is fixed in version 7.6.1.

Published 2026-10-15.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Lycheeorg Lychee — versions < 7.6.1

Weakness classification (CWE)

CWE-307 — Improper Restriction of Excessive Authentication Attempts

References

Frequently asked questions

What is CVE-2026-61611?: CVE-2026-61611 is a high-severity vulnerability in Lycheeorg Lychee, classified under Improper Restriction of Excessive Authentication Attempts. CVSS score: 7.5/10. Published 2026-10-15.
How severe is CVE-2026-61611?: High severity. CVSS v3 base score is 7.5 out of 10.