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PHP EUVD-2026-20821

| CVE-2026-5828 MEDIUM
SQL Injection (CWE-89)
2026-04-09 VulDB
SQLi PHP
5.5
CVSS 4.0 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Lifecycle Timeline

5
CVSS changed
Apr 29, 2026 - 01:11 NVD
6.9 (MEDIUM) 5.5 (MEDIUM)
PoC Detected
Apr 09, 2026 - 02:16 vuln.today
Public exploit code
EUVD ID Assigned
Apr 09, 2026 - 01:30 euvd
EUVD-2026-20821
Analysis Generated
Apr 09, 2026 - 01:30 vuln.today
CVE Published
Apr 09, 2026 - 01:00 nvd
MEDIUM 6.9

DescriptionCVE.org

A vulnerability was found in code-projects Simple IT Discussion Forum 1.0. The affected element is an unknown function of the file /functions/addcomment.php. The manipulation of the argument postid results in sql injection. The attack may be launched remotely. The exploit has been made public and could be used.

AnalysisAI

SQL injection in Simple IT Discussion Forum 1.0 allows unauthenticated remote attackers to extract, modify, or delete database records via crafted postid parameter in /functions/addcomment.php. Publicly available exploit code exists. …

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Vulnerability AssessmentAI

Risk Assessment CVSS 7.3 reflects moderate-to-high severity SQL injection in unauthenticated endpoint. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Attacker sends HTTP request to /functions/addcomment.php with SQL payload in postid parameter (e.g., postid=1' OR '1'='1). No authentication required. …
Remediation No vendor-released patch identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Identify all instances of Simple IT Discussion Forum 1.0 in your environment and take the affected application offline or restrict network access to /functions/addcomment.php. …

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EUVD-2026-20821 vulnerability details – vuln.today
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