CVE-2026-39957 | Lychee up to 7.5.3 listAll authorization (GHSA-4v4c-g2jv-4g25)

VDB-356625 · CVE-2026-39957 · GHSA-4V4C-G2JV-4G25 LYCHEE UP TO 7.5.3 LISTALL AUTHORIZATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $0-$5k 0.70+ Summaryinfo A vulnerability has been found in Lychee up to 7.5.3 and classified as problematic. Impacted is the function SharingController::listAll. Performing a manipulation results in authorization. This vulnerability is known as CVE-2026-39957. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded. Detailsinfo A vulnerability classified as problematic has been found in Lychee up to 7.5.3. This affects the function SharingController::listAll. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on confidentiality. The summary by CVE is: Lychee is a free, open-source photo-management tool. Prior to 7.5.4, a SQL operator-precedence bug in SharingController::listAll() causes the orWhereNotNull('user_group_id') clause to escape the ownership filter applied by the when() block. Any authenticated non-admin user with upload permission who owns at least one album can retrieve all user-group-based sharing permissions across the entire instance, including private albums owned by other users. This vulnerability is fixed in 7.5.4. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-39957 since 04/08/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. Upgrading to version 7.5.4 eliminates this vulnerability. Applying the patch 76a3f0513eca6458bf7f8c337c1ad65e59b22bcb is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Name Lychee Version 7.5.0 7.5.1 7.5.2 7.5.3 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Authorization CWE: CWE-863 / CWE-285 / CWE-266 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Lychee 7.5.4 Patch: 76a3f0513eca6458bf7f8c337c1ad65e59b22bcb Timelineinfo 04/08/2026 CVE reserved 04/09/2026 +1 days Advisory disclosed 04/09/2026 +0 days VulDB entry created 04/09/2026 +0 days VulDB entry last update Sourcesinfo Advisory: GHSA-4v4c-g2jv-4g25 Status: Confirmed CVE: CVE-2026-39957 (🔒) GCVE (CVE): GCVE-0-2026-39957 GCVE (VulDB): GCVE-100-356625 Entryinfo Created: 04/09/2026 19:43 Changes: 04/09/2026 19:43 (68) Complete: 🔍 Cache ID: 99:5D9:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸