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MoguBlog EUVDEUVD-2026-76138

| CVE-2026-89265 MEDIUM
Missing Authorization (CWE-862)
2026-09-11 VulnCheck GHSA-jgmr-fg2f-g83q
5.3
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
5.3 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/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
vuln.today AI
4.3 MEDIUM

Network-accessible admin endpoint requires valid session (PR:L); only limited metadata disclosed (C:L); no integrity or availability impact.

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Primary rating from Vendor (VulnCheck).

CVSS VectorVendor: VulnCheck

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Metadata Corrected
Sep 11, 2026 - 16:40 vuln.today
tag: Authentication Bypass removed
Metadata Corrected
Sep 11, 2026 - 16:40 vuln.today
tag: Microsoft removed
CVSS changed
Sep 11, 2026 - 16:22 NVD
4.3 (MEDIUM) 5.3 (MEDIUM)
Analysis Generated
Sep 11, 2026 - 16:20 vuln.today
CVE Published
Sep 11, 2026 - 15:25 cve.org
MEDIUM 4.3

DescriptionCVE.org

MoguBlog through 6.2 contains an authorization bypass vulnerability in the POST /pictureSort/getPictureSortByUid endpoint, which omits the @AuthorityVerify annotation required to enforce role-based permissions. Authenticated back-office users without image-category permissions can supply a category uid to retrieve restricted image-category records including metadata such as name, cover file uid, sort order and timestamps.

AnalysisAI

Missing authorization on a MoguBlog admin-backend endpoint allows authenticated back-office users to retrieve image-category records beyond their assigned role permissions. The POST /pictureSort/getPictureSortByUid handler in versions through 6.2 omits the @AuthorityVerify annotation that enforces role-based access control, making it a classic Broken Function Level Authorization (BFLA) flaw. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
technique details hidden
Exploit
technique details hidden
Execution
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Impact
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Vulnerability AssessmentAI

Exploitation Exploitation requires a valid authenticated session in the MoguBlog admin back-office (PR:L per CVSS vector) - unauthenticated external access is not possible. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 3.1 scores this at 4.3 (Medium) with vector AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N, which accurately reflects the constrained real-world risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Full exploit scenario with step-by-step reproduction available after sign-in.
Remediation No vendor-released patch has been identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.

Threat intelligence, references, and detailed analysis are available after sign-in.

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EUVD-2026-76138 vulnerability details – vuln.today

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