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PHP CVE-2026-5561

| EUVD-2026-19069 LOW
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (CWE-74)
2026-04-05 VulDB GHSA-hffx-627q-p234
2.1
CVSS 4.0 · NVD

Severity by source

NVD PRIMARY
2.1 LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
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
5.3 (MEDIUM) 2.1 (LOW)
PoC Detected
Apr 07, 2026 - 13:20 vuln.today
Public exploit code
EUVD ID Assigned
Apr 05, 2026 - 11:00 euvd
EUVD-2026-19069
Analysis Generated
Apr 05, 2026 - 11:00 vuln.today
CVE Published
Apr 05, 2026 - 10:45 nvd
MEDIUM 5.3

DescriptionCVE.org

A vulnerability was determined in Campcodes Complete POS Management and Inventory System up to 4.0.6. This affects an unknown function of the file app/Http/Controllers/SettingsController.php of the component Environment Variable Handler. Executing a manipulation can lead to injection. It is possible to launch the attack remotely. The exploit has been publicly disclosed and may be utilized.

AnalysisAI

Campcodes Complete POS Management and Inventory System up to version 4.0.6 allows authenticated remote attackers to inject malicious input through the Environment Variable Handler in SettingsController.php, leading to information disclosure and potential system compromise. The vulnerability has publicly available exploit code and affects an undisclosed function handling environment variable manipulation, with moderate CVSS 6.3 severity driven by network-accessible attack surface and low attack complexity.

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Vulnerability AssessmentAI

Risk Assessment The CVSS 6.3 score reflects moderate severity with network accessibility (AV:N) and low attack complexity (AC:L), indicating the attack does not require special conditions. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated user with legitimate credentials (such as a store manager or junior administrator) could access the Settings module and inject malicious input into environment variable fields handled by SettingsController.php. The low attack complexity and publicly available exploit code mean an attacker with stolen or weak credentials could systematically inject payloads to extract sensitive configuration data, modify application behavior, or escalate privileges. …
Remediation The primary remediation is to upgrade Campcodes Complete POS Management and Inventory System to a patched version beyond 4.0.6; however, the exact patched version number is not specified in available advisory data. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-5561 vulnerability details – vuln.today

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