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Vulnerability Details :

CVE-2026-39957

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-09 Apr, 2026 | 16:14
Updated At-09 Apr, 2026 | 19:08
Rejected At-
Credits

Lychee has Broken Access Control in SharingController::listAll() leaks private album sharing metadata to unauthorized users

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.

Vendors
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Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:09 Apr, 2026 | 16:14
Updated At:09 Apr, 2026 | 19:08
Rejected At:
▼CVE Numbering Authority (CNA)
Lychee has Broken Access Control in SharingController::listAll() leaks private album sharing metadata to unauthorized users

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.

Affected Products
Vendor
LycheeOrg
Product
Lychee
Versions
Affected
  • < 7.5.4
Problem Types
TypeCWE IDDescription
CWECWE-863CWE-863: Incorrect Authorization
Type: CWE
CWE ID: CWE-863
Description: CWE-863: Incorrect Authorization
Metrics
VersionBase scoreBase severityVector
4.02.3LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Version: 4.0
Base score: 2.3
Base severity: LOW
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-4v4c-g2jv-4g25
x_refsource_CONFIRM
https://github.com/LycheeOrg/Lychee/pull/4264
x_refsource_MISC
https://github.com/LycheeOrg/Lychee/commit/76a3f0513eca6458bf7f8c337c1ad65e59b22bcb
x_refsource_MISC
Hyperlink: https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-4v4c-g2jv-4g25
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/LycheeOrg/Lychee/pull/4264
Resource:
x_refsource_MISC
Hyperlink: https://github.com/LycheeOrg/Lychee/commit/76a3f0513eca6458bf7f8c337c1ad65e59b22bcb
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:09 Apr, 2026 | 17:16
Updated At:13 Apr, 2026 | 15:02

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.02.3LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Type: Secondary
Version: 4.0
Base score: 2.3
Base severity: LOW
Vector:
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CPE Matches

Weaknesses
CWE IDTypeSource
CWE-863Primarysecurity-advisories@github.com
CWE ID: CWE-863
Type: Primary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/LycheeOrg/Lychee/commit/76a3f0513eca6458bf7f8c337c1ad65e59b22bcbsecurity-advisories@github.com
N/A
https://github.com/LycheeOrg/Lychee/pull/4264security-advisories@github.com
N/A
https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-4v4c-g2jv-4g25security-advisories@github.com
N/A
Hyperlink: https://github.com/LycheeOrg/Lychee/commit/76a3f0513eca6458bf7f8c337c1ad65e59b22bcb
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/LycheeOrg/Lychee/pull/4264
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/LycheeOrg/Lychee/security/advisories/GHSA-4v4c-g2jv-4g25
Source: security-advisories@github.com
Resource: N/A

Change History

0
Information is not available yet

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