Which versions of PHP are affected by CVE-2026-4839?

A critical SQL injection vulnerability in the Food Ordering System (CVE-2026-4839) allows unauthenticated attackers to access, modify, or delete customer and business data without authentication.

Is there a public PoC exploit available for CVE-2026-4839?

Yes, a public proof-of-concept exploit is available for CVE-2026-4839. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-4839?

Within 24 hours: Immediately disable the /purchase.php endpoint or restrict access via network controls; audit logs for exploitation attempts; notify stakeholders of potential exposure. Within 7 days: Deploy WAF rules to block SQL injection patterns in the 'custom' parameter; conduct database audit for unauthorized access or modifications; implement network segmentation to isolate the affected system. Within 30 days: Evaluate alternative ordering systems or vendor security updates; perform forensic analysis if compromise suspected; implement input validation and parameterized queries as interim code-level mitigations; establish vendor communication for patch timeline.

PHP CVE-2026-4839

Q: What is the CVSS score of CVE-2026-4839?

CVE-2026-4839 has a CVSS 4.0 base score of 5.5 (Medium). CVSS vector: 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. EPSS exploitation probability: 0.0%.

EUVD-2026-16085 MEDIUM

SQL Injection (CWE-89)

2026-03-26 VulDB

GHSA-2w66-j4vc-q66r

PHP SQLi

5.5

CVSS 4.0 · NVD

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

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

6.9 (MEDIUM) 5.5 (MEDIUM)

PoC Detected

Mar 30, 2026 - 13:26 vuln.today

Public exploit code

EUVD ID Assigned

Mar 26, 2026 - 03:45 euvd

EUVD-2026-16085

Analysis Generated

Mar 26, 2026 - 03:45 vuln.today

CVE Published

Mar 26, 2026 - 03:14 nvd

MEDIUM 6.9

DescriptionCVE.org

A vulnerability has been found in SourceCodester Food Ordering System 1.0. This affects an unknown function of the file /purchase.php of the component Parameter Handler. The manipulation of the argument custom leads to sql injection. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.

AnalysisAI

SQL injection in SourceCodester Food Ordering System 1.0 via the custom parameter in /purchase.php allows unauthenticated remote attackers to execute arbitrary SQL queries. Public exploit code exists for this vulnerability, and no patch is currently available. …

Unlock full vulnerability intelligence

Risk assessment & exploitation conditions
Attack chain visualization
Remediation with exact patch versions
Threat intelligence from 22 sources
Personal watchlist & email alerts

Continue with Google Continue with GitHub

Free forever · No credit card required

Vulnerability AssessmentAI

Risk Assessment	The real-world risk is HIGH and warrants immediate attention. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An unauthenticated remote attacker identifies a public-facing Food Ordering System installation and accesses the /purchase.php endpoint. Using the publicly available exploit code from https://github.com/WHOAMI-xiaoyu/CVE/blob/main/CVE_9.md, the attacker crafts a malicious HTTP request containing SQL injection payloads in the 'custom' parameter, such as union-based or time-based blind injection techniques. …
Remediation	No official patch or updated version has been released by SourceCodester as indicated by the CVSS remediation level of 'Unavailable' (RL:X). … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Immediately disable the /purchase.php endpoint or restrict access via network controls; audit logs for exploitation attempts; notify stakeholders of potential exposure. …

Threat intelligence, references, and detailed analysis are available after sign-in.

More from same product – last 7 days

CVE-2026-49952 CRITICAL Act Now POC

9.3 Jun 15

Authentication bypass in Discuz! X5.0 releases 20260320 through 20260501 allows unauthenticated remote attackers to acce

CVE-2026-49954 HIGH This Week POC

8.6 Jun 15

Authenticated remote code execution in Discuz! X5.0 releases 20260320 through 20260501 allows administrators to chain a

CVE-2026-49768 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP Object Injection in the Happyforms WordPress plugin (versions <= 1.26.13) allows remote attackers to

CVE-2026-27053 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP Object Injection in the Broadcast Live Video WordPress plugin (versions prior to 7.1.3) allows remot

CVE-2026-49104 CRITICAL Act Now

9.8 Jun 15

Unauthenticated PHP object injection in the WordPress plugin 'Integration for Keap/Infusionsoft and Contact Form 7, WPFo

CVE-2026-4839 vulnerability details – vuln.today

Back

PHP CVE-2026-4839

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Unlock full vulnerability intelligence

Vulnerability AssessmentAI

Recommended ActionAI

More from same product – last 7 days

Share

External POC / Exploit Code