EUVD-2026-72397
GHSA-3672-84c4-cx98
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
Network-accessible cookie manipulation requires no privileges or interaction; C:L/I:L reflects account impersonation with limited scope; A:N because availability is not directly impacted by auth bypass alone.
Primary rating from Vendor (vuldb).
CVSS VectorVendor: vuldb
Lifecycle Timeline
1DescriptionCVE.org
A weakness has been identified in light0011 cms c774dce31c6df0055568a8d5c53d964d99be199d/f72cf46f601efb2a0618c3814cc2f61380b38930. This affects an unknown part of the file App/Home/Model/UserModel.class.php of the component Cookie Helper. Executing a manipulation of the argument Username can lead to improper authentication. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. This product utilizes a rolling release system for continuous delivery, and as such, version information for affected or updated releases is not disclosed. The project was informed of the problem early through an issue report but has not responded yet.
AnalysisAI
Authentication bypass in the light0011 CMS Cookie Helper allows remote unauthenticated attackers to manipulate the Username argument in App/Home/Model/UserModel.class.php and impersonate arbitrary users without valid credentials. The vulnerability (CWE-287, Improper Authentication) affects all commits through at least c774dce31c6df0055568a8d5c53d964d99be199d and f72cf46f601efb2a0618c3814cc2f61380b38930 of this PHP CMS. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special configuration is required - the vulnerability exists in the default Cookie Helper implementation of the light0011 CMS, and any installation reachable over the network is exploitable by an unauthenticated remote attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) confirms fully remote, unauthenticated exploitation with low attack complexity and no user interaction, consistent with straightforward cookie manipulation. … 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 - the maintainer was notified via GitHub issue #11 (https://github.com/light0011/cms/issues/11) but has not responded. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
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External POC / Exploit Code
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