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lamp-cloud EUVDEUVD-2026-84208

| CVE-2026-94534 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-09-21 VulnCheck GHSA-fp33-7f49-fwpm
7.1
CVSS 4.0 · Vendor: VulnCheck
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Severity by source

Vendor (VulnCheck) PRIMARY
7.1 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/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
6.5 MEDIUM

Any authenticated user (PR:L) can remotely and reliably (AV:N/AC:L) overwrite other users' profile fields (I:H); endpoints only write so C:N, and there is no genuine availability loss so A:N (I lower the input's A:L).

3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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
POC Analysis Generated
Sep 21, 2026 - 23:21 vuln.today
Metadata Corrected
Sep 21, 2026 - 22:40 vuln.today
tag: Java added
Metadata Corrected
Sep 21, 2026 - 22:40 vuln.today
tag: Authentication Bypass removed
Analysis Generated
Sep 21, 2026 - 22:02 vuln.today
CVE Published
Sep 21, 2026 - 21:28 cve.org
HIGH 7.1

DescriptionCVE.org

lamp-cloud through 5.10.0 fails to validate user identity in PUT /anyone/baseInfo and PUT /anyone/avatar endpoints, allowing authenticated attackers to modify arbitrary user profiles. Attackers can supply target user IDs in request bodies to rewrite profile fields including nickname, ID card, sex, nation, education, work description, and avatar attachments of other users.

AnalysisAI

Authenticated profile tampering in dromara lamp-cloud through 5.10.0 lets any logged-in user overwrite other users' profile records - nickname, ID card, sex, nation, education, work description and avatar attachment - by supplying a victim's user ID in the body of a PUT request to /anyone/baseInfo or /anyone/avatar. The root cause is a broken object-level authorization (BOLA/IDOR, CWE-639) in the lamp-oauth UserInfoController, which takes the target identity from attacker-controlled request data instead of the authenticated session; exploitation requires only a low-privilege account (CVSS 3.1 vector AV:N/AC:L/PR:L/UI:N, no user interaction) and is scored 7.1 with impact confined to integrity. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
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Delivery
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Execution
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Vulnerability AssessmentAI

Exploitation Requires a valid authenticated (low-privilege) account on the target lamp-cloud instance (PR:L); no special or non-default configuration is needed since the flaw exists in the default /anyone/baseInfo and /anyone/avatar PUT endpoints of the lamp-oauth UserInfoController. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L = 7.1) describes a network-reachable, low-complexity flaw requiring only low-privilege authentication and no user interaction - consistent with a broken object-level authorization (BOLA/IDOR) bug where any logged-in user rewrites other users' profiles. … 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 is identified in the available data for CVE-2026-94534, so remediation must begin with compensating controls. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, inventory all deployments of dromara lamp-cloud and identify any running version 5.10.0 or earlier; review access logs for PUT requests to /anyone/baseInfo and /anyone/avatar to detect tampering attempts, and immediately restrict or disable those endpoints if operationally feasible. …

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EUVD-2026-84208 vulnerability details – vuln.today

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