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PHP CVE-2026-5828

| EUVDEUVD-2026-20821 MEDIUM
SQL Injection (CWE-89)
2026-04-09 VulDB
5.5
CVSS 4.0 · Vendor: VulDB
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Severity by source

Vendor (VulDB) 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 Vendor (VulDB) · only source for this CVE.

CVSS VectorVendor: VulDB

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. CVSS 7.3 indicates network-accessible attack requiring no user interaction, achieving partial confidentiality, integrity, and availability impact. Vulnerability disclosed with proof-of-concept on GitHub.

Technical ContextAI

CWE-89 SQL injection stems from insufficient input validation on postid parameter within addcomment.php. PHP application accepts unsanitized user-supplied data directly in SQL queries, enabling arbitrary SQL command execution. Network accessibility (AV:N) and low attack complexity (AC:L) combined with no authentication requirement (PR:N) create trivial exploitation conditions.

RemediationAI

No vendor-released patch identified at time of analysis. Immediate mitigation requires disabling or removing /functions/addcomment.php functionality until security updates become available. Implement parameterized SQL queries (prepared statements) to eliminate injection vectors. Deploy web application firewall rules blocking SQL metacharacters in postid parameter. Monitor database activity logs for anomalous query patterns. Reference vulnerability disclosure: https://github.com/lonelyuan/vunls/issues/7 and https://vuldb.com/vuln/356275 for technical indicators. Organizations should evaluate migration to actively maintained forum software given absence of vendor security response.

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CVE-2026-5828 vulnerability details – vuln.today

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