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PHP CVE-2026-4831

| EUVD-2026-16076 LOW
Improper Authentication (CWE-287)
2026-03-26 VulDB
2.9
CVSS 4.0

CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

6
Severity Changed
Apr 29, 2026 - 01:11 NVD
MEDIUM LOW
CVSS changed
Apr 29, 2026 - 01:11 NVD
6.3 (MEDIUM) 2.9 (LOW)
PoC Detected
Mar 30, 2026 - 13:26 vuln.today
Public exploit code
EUVD ID Assigned
Mar 26, 2026 - 01:45 euvd
EUVD-2026-16076
Analysis Generated
Mar 26, 2026 - 01:45 vuln.today
CVE Published
Mar 26, 2026 - 01:02 nvd
MEDIUM 6.3

DescriptionNVD

A security flaw has been discovered in kalcaddle kodbox 1.64. Impacted is the function can of the file /workspace/source-code/app/controller/explorer/auth.class.php of the component Password-protected Share Handler. Performing a manipulation results in improper authentication. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

AnalysisAI

Improper authentication in the password-protected share handler of Kalcaddle Kodbox 1.64 allows remote attackers to bypass access controls through manipulation of the authentication function, despite high attack complexity. Public exploit code exists for this vulnerability, and no patch is currently available from the vendor.

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RemediationAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Audit authentication configurations.

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CVE-2026-4831 vulnerability details – vuln.today

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