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.

• CWE-307

• https://github.com/LycheeOrg/Lychee/commit/592291458a3373114a21412956fd23cfcda32aba
• https://github.com/LycheeOrg/Lychee/pull/4448
• https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.1
• https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-48vf-fwx6-2ph6
• https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-48vf-fwx6-2ph6

Published

Oct 15, 2026

Last Modified

Oct 29, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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