Which versions of PHP are affected by CVE-2026-4623?

A Server-Side Request Forgery vulnerability in the Jeson-Customer-Relationship-Management-System allows attackers to manipulate the server into making unauthorized requests, potentially exposing…. A patch is available.

Is there a public PoC exploit available for CVE-2026-4623?

Yes, a public proof-of-concept exploit is available for CVE-2026-4623. Prioritise patching immediately. EPSS: 0.0%.

PHP CVE-2026-4623

Q: What is the CVSS score of CVE-2026-4623?

CVE-2026-4623 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-2026-14696 MEDIUM

Server-Side Request Forgery (SSRF) (CWE-918)

2026-03-24 VulDB

PHP SSRF

5.5

CVSS 4.0

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)

Severity Changed

Apr 24, 2026 - 16:37 NVD

HIGH MEDIUM

CVSS changed

Apr 24, 2026 - 16:37 NVD

7.3 (HIGH) 6.9 (MEDIUM)

PoC Detected

Mar 24, 2026 - 15:53 vuln.today

Public exploit code

EUVD ID Assigned

Mar 24, 2026 - 02:45 euvd

EUVD-2026-14696

Analysis Generated

Mar 24, 2026 - 02:45 vuln.today

Patch released

Mar 24, 2026 - 02:45 nvd

Patch available

CVE Published

Mar 24, 2026 - 01:39 nvd

HIGH 7.3

DescriptionNVD

A security vulnerability has been detected in DefaultFuction Jeson-Customer-Relationship-Management-System up to 1b4679c4d06b90d31dd521c2b000bfdec5a36e00. This affects an unknown function of the file /api/System.php of the component API Module. The manipulation of the argument url leads to server-side request forgery. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The identifier of the patch is f76e7123fe093b8675f88ec8f71725b0dd186310/98bd4eb07fa19d4f2c5228de6395580013c97476. It is suggested to install a patch to address this issue.

AnalysisAI

A Server-Side Request Forgery (SSRF) vulnerability exists in DefaultFuction Jeson-Customer-Relationship-Management-System affecting versions up to commit 1b4679c4d06b90d31dd521c2b000bfdec5a36e00. The vulnerability resides in the /api/System.php file where the 'url' parameter can be manipulated to force the server to make arbitrary requests. …

RemediationAI

Within 24 hours: Identify all systems running affected versions (up to commit 1b4679c4d06b90d31dd521c2b000bfdec5a36e00) and assess exposure to internet-facing traffic. Within 7 days: Apply vendor patches to all affected instances in production and staging environments. …

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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Get intelligence summaries, risk assessment, exploit details, threat intel, and remediation guidance.

CVE-2026-4623 vulnerability details – vuln.today

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PHP CVE-2026-4623

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

RemediationAI

Analysis

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PHP CVE-2026-4623

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

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External POC / Exploit Code