Lychee: Missing rate limiting on album password unlock endpoint allows brute-force attacks

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-61611
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-15 17:17:26 UTC
Updated2026-10-15 21:08:49 UTC
DescriptionLychee 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-307 | CWE-307 CWE-307: Improper Restriction of Excessive Authentication Attempts

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA LycheeOrg Lychee affected < 7.6.1 Not specified

References

ReferenceSourceLinkTags
github.com/LycheeOrg/Lychee/pull/4448 [email protected] github.com
github.com/LycheeOrg/Lychee/commit/592291458a3373114a21412956fd23cfcda32aba [email protected] github.com
github.com/LycheeOrg/Lychee/releases/tag/v7.6.1 [email protected] github.com
github.com/LycheeOrg/Lychee/security/advisories/GHSA-48vf-fwx6-2ph6 [email protected] github.com
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