Which versions of PHP are affected by CVE-2026-4898?

Organizations using A vulnerability should be aware of moderate risk from CVE-2026-4898, a cross-site scripting vulnerability rated CVSS 5.3.

Is there a public PoC exploit available for CVE-2026-4898?

Yes, a public proof-of-concept exploit is available for CVE-2026-4898. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-4898?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

PHP CVE-2026-4898

Q: What is the CVSS score of CVE-2026-4898?

CVE-2026-4898 has a CVSS 4.0 base score of 2.1 (Low). CVSS vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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-2026-16454 LOW

Cross-site Scripting (XSS) (CWE-79)

2026-03-26 VulDB

XSS PHP

2.1

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

2.1 LOW

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/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:P/VC:N/VI:L/VA:N/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

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

Mar 30, 2026 - 13:26 vuln.today

Public exploit code

EUVD ID Assigned

Mar 26, 2026 - 21:31 euvd

EUVD-2026-16454

Analysis Generated

Mar 26, 2026 - 21:31 vuln.today

CVE Published

Mar 26, 2026 - 21:08 nvd

MEDIUM 5.3

DescriptionCVE.org

A vulnerability was identified in code-projects Online Food Ordering System 1.0. Affected by this vulnerability is an unknown functionality of the file /dbfood/contact.php. The manipulation of the argument Name leads to cross site scripting. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

AnalysisAI

The Online Food Ordering System 1.0 by code-projects contains a reflected cross-site scripting (XSS) vulnerability in the Name parameter of /dbfood/contact.php that allows unauthenticated remote attackers to inject malicious scripts. The vulnerability has a publicly available proof-of-concept and affects all versions of the affected product line. …

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Vulnerability AssessmentAI

Risk Assessment	The CVSS vector (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) indicates network-accessible, low-complexity attack with no privileges required but requiring user interaction (UI:R), resulting in low integrity impact only. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker crafts a malicious URL containing JavaScript payload in the Name parameter (e.g., contact.php?Name=<script>alert('XSS')</script>) and tricks a victim into clicking it via phishing email or social engineering. When the victim visits the contact form page with the injected parameter, the unvalidated input is reflected directly into the HTML response, causing the attacker's JavaScript to execute in the victim's browser with the same privileges as the legitimate website. …
Remediation	No vendor-released patch identified at time of analysis. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-4898 vulnerability details – vuln.today

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PHP CVE-2026-4898

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

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External POC / Exploit Code