Is there a public PoC exploit available for CVE-2026-5553?

Yes, a public proof-of-concept exploit is available for CVE-2026-5553. Prioritise patching immediately. EPSS: 0.0%.

PHP CVE-2026-5553

Q: What is the CVSS score of CVE-2026-5553?

CVE-2026-5553 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: 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. EPSS exploitation probability: 0.0%.

EUVD-2026-19054 LOW

SQL Injection (CWE-89)

2026-04-05 VulDB

PHP SQLi Online Cellphone System Itsourcecode

2.1

CVSS 4.0 · Vendor: VulDB

Severity by source

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

CVSS VectorVendor: VulDB

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Lifecycle Timeline

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 - 09:15 euvd

EUVD-2026-19054

Analysis Generated

Apr 05, 2026 - 09:15 vuln.today

CVE Published

Apr 05, 2026 - 08:45 nvd

MEDIUM 5.3

DescriptionCVE.org

A vulnerability was identified in itsourcecode Online Cellphone System 1.0. Affected by this vulnerability is an unknown functionality of the file /cp/available.php of the component Parameter Handler. Such manipulation of the argument Name leads to sql injection. The attack can be launched remotely. The exploit is publicly available and might be used.

AnalysisAI

SQL injection in itsourcecode Online Cellphone System 1.0 allows authenticated remote attackers to execute arbitrary SQL queries via the Name parameter in /cp/available.php, potentially compromising confidentiality, integrity, and availability of the application database. Publicly available exploit code exists and the vulnerability has moderate exploitability signals (CVSS 6.3, EPSS evidence of public tools), though no CISA KEV confirmation of active exploitation is present.

Technical ContextAI

The vulnerability exists in a PHP-based web application (itsourcecode Online Cellphone System) where user-supplied input via the Name parameter is passed unsanitized to SQL queries in the /cp/available.php file. This is a classic SQL injection flaw (CWE-89: SQL Injection) where the Parameter Handler component fails to properly validate or parameterize database queries. The affected product is identified by CPE cpe:2.3:a:itsourcecode:online_cellphone_system:*:*:*:*:*:*:*:*, indicating all versions of this specific application are potentially vulnerable. PHP applications without prepared statements or input validation are particularly susceptible to this attack class.

RemediationAI

Immediate remediation requires upgrading itsourcecode Online Cellphone System to a patched version if available from the vendor; however, no specific patched version number is identified in available data. Organizations should contact itsourcecode.com directly to obtain security updates. As an interim workaround pending patch availability, implement Web Application Firewall (WAF) rules to detect and block SQL injection patterns in the Name parameter of /cp/available.php, restrict access to the /cp/ directory to trusted IP ranges, and enforce parameterized queries (prepared statements) in PHP code. Apply principle of least privilege to database user accounts to limit damage scope if injection occurs. References for additional details are available at https://vuldb.com/vuln/355323 and the public exploit discussion at https://github.com/Wzl731/test/issues/3.