CVE-2026-61610 Details
Description
Lychee is a free, open-source photo-management tool. Prior to 7.6.1, when photos_star_visibility is set to anonymous, POST /api/v2/Photo::highlight can fetch and modify a photo without confirming that the caller can see it. BaseApiRequest::validateResolved() invokes SetPhotosHighlightedRequest::processValidatedValues() before authorization, and PhotoPolicy::canHighlight() returns true for anonymous callers without a canSee check. An unauthenticated attacker who can guess photo identifiers can distinguish existing private photos through differing success and not-found responses and can change their is_highlighted state, including for photos in private or password-protected albums. The issue is limited to installations using the non-default anonymous star-visibility setting. This issue is fixed in version 7.6.1.
A vulnerability exists in Lychee, a photo management tool, prior to version 7.6.1, allowing unauthenticated users to highlight photos without proper authorization checks. This issue arises when the 'photos_star_visibility' setting is set to 'anonymous', a non-default option. The vulnerability allows attackers to manipulate the highlight status of photos, including those in private or password-protected albums, by exploiting the absence of visibility checks in the API request handling.
Users can update to Lychee version 7.6.1 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 15, 2026CISA-ADP
Assessed Oct 20, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-qcqq-p4pq-7r77 | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/LycheeOrg/Lychee/commit/fe07567c176bbdcda7b276bb6d664dfcd47a9b00 | [email protected] | Source CodeVendor |
| https://github.com/LycheeOrg/Lychee/pull/4449 | [email protected] | Issue TrackingSource CodeVendor |
| https://github.com/LycheeOrg/Lychee/releases/tag/v7.6.1 | [email protected] | Release NotesVendor |
| https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-qcqq-p4pq-7r77 | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-284 | Improper Access Control | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Lychee | <= 7.6.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 20, 2026 | CVE Modified | CISA-ADP |
| Oct 15, 2026 | New CVE Received | [email protected] |