What is the CVSS score of CVE-2025-49139?

CVE-2025-49139 has a CVSS 3.1 base score of 5.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N. EPSS exploitation probability: 0.1%.

Is there a public PoC exploit available for CVE-2025-49139?

Yes, a public proof-of-concept exploit is available for CVE-2025-49139. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-49139?

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

PHP CVE-2025-49139

Q: Which versions of PHP are affected by CVE-2025-49139?

Organizations using HAX CMS PHP should be aware of moderate risk from CVE-2025-49139 rated CVSS 5.3. Exploitation could compromise the security of affected deployments.. A patch is available.

EUVD-2025-17563 MEDIUM

Improper Restriction of Rendered UI Layers or Frames (CWE-1021)

2025-06-09 security-advisories@github.com

GHSA-v3ph-2q5q-cg88

PHP XSS Haxcms Nodejs Haxcms Php Psu

5.3

CVSS 3.1 · GitHub Advisory

View

Vulnerability Assessment

Weakness	CWE CWE-1021 OWASP Top 10:2025 A06:2025 - Insecure Design ASVS 5.0 V3 - Web Frontend Security Clickjacking prevention, X-Frame-Options
Impact	CVSS score of 5.3 (MEDIUM).

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

HAX CMS PHP allows users to manage their microsite universe with a PHP backend. Prior to version 11.0.0, in the HAX site editor, users can create a website block to load another site in an iframe. The application allows users to supply a target URL in the website block. When the HAX site is visited, the client's browser will query the supplied URL. An authenticated attacker can create a HAX site with a website block pointing at an attacker-controlled server running Responder or a similar tool. The attacker can then conduct a phishing attack by convincing another user to visit their malicious HAX site to harvest credentials. Version 11.0.0 contains a patch for the issue.

Earlier versions of this analysis (1)

v1 Mar 14, 2026 - 19:21 CVSS 5.3

RemediationAI

A vendor patch is available. Apply it as soon as possible and verify the fix.

Affected VersionsENISA

issues < 11.0.0

Affected Packages

npm @haxtheweb/haxcms-nodejs fix: 11.0.0

euvd issues fix: 11.0.0

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in npm, euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Improper Restriction of Rendered UI Layers or Frames (CWE-1021).

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 5.3 MEDIUM

AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Lifecycle Timeline

Patch released

Mar 14, 2026 - 19:21 nvd

Patch available

PoC Detected

Jul 30, 2025 - 17:35 vuln.today

Public exploit code

CVE Published

Jun 09, 2025 - 21:15 nvd

MEDIUM 5.3

Executive ViewAI

Why It Matters

Organizations using HAX CMS PHP should be aware of moderate risk from CVE-2025-49139 rated CVSS 5.3. Exploitation could compromise the security of affected deployments. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.

Business Impact: Low

Compensating Controls

Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.

Threat Intelligence Overview

EPSS Score

0.1%

Top 76% exploitable

Exploit

POC

Public exploit code exists

Data Quality

5 sources

Confidence: Medium

EUVD

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC Yes

EPSS 0.1%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

Low

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +26

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Cross-Site Scripting MEDIUM

Cross-Site Scripting occurs when an application accepts untrusted data and sends it to a web browser without proper validation or encoding.

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References

Advisories & patches

PATCH https://github.com/haxtheweb/haxcms-nodejs/commit/5368eb9b278ca47cd9a83b8d3e6216375615b8f5 ADVISORY https://github.com/haxtheweb/issues ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-49139

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