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PHP EUVDEUVD-2025-18665

| CVE-2025-26199 CRITICAL
Cleartext Transmission of Sensitive Information (CWE-319)
2025-06-18 cve@mitre.org
9.8
CVSS 3.1 · NVD
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Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A04:2025 - Cryptographic Failures
ASVS 5.0
V12 - Secure Communication Transport encryption
Impact

CVSS 9.8. EPSS 1.1%. Public PoC/exploit available. No patch confirmed.

Exploit ScenarioDerived

An attacker could send a specially crafted request to CloudClassroom-PHP-Project v1.0 to execute arbitrary code on the underlying server, potentially gaining full control of the system.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.
No patch listed yet 1.1% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 14, 2026

A remote code execution vulnerability in CloudClassroom-PHP-Project v1.0 (CVSS 9.8). Risk factors: public PoC available.

Earlier versions of this analysis (1)
v1 Mar 14, 2026 - 22:49 CVSS 9.8

CloudClassroom-PHP-Project v1.0 is affected by an insecure credential transmission vulnerability. The application transmits passwords over unencrypted HTTP during the login process, exposing sensitive

RemediationAI

Monitor vendor channels for patch availability.

Affected VersionsENISA

n/a n/a

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

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

Technical ContextAI · show details

Vulnerability type: remote code execution. CVSS 9.8 indicates critical severity with likely remote exploitation vector. Affects CloudClassroom-PHP-Project v1.0.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
PoC Detected
Jul 09, 2025 - 18:25 vuln.today
Public exploit code
CVE Published
Jun 18, 2025 - 20:15 nvd
CRITICAL 9.8

DescriptionCVE.org

CloudClassroom-PHP-Project v1.0 is affected by an insecure credential transmission vulnerability. The application transmits passwords over unencrypted HTTP during the login process, exposing sensitive credentials to potential interception by network-based attackers. A remote attacker with access to the same network (e.g., public Wi-Fi or compromised router) can capture login credentials via Man-in-the-Middle (MitM) techniques. If the attacker subsequently uses the credentials to log in and exploit administrative functions (e.g., file upload), this may lead to remote code execution depending on the environment.

Executive ViewAI

Why It Matters

CloudClassroom-PHP-Project v1.0 transmits login credentials over unencrypted HTTP, allowing attackers on shared networks to steal user passwords and gain unauthorized system access. This vulnerability directly threatens any organization deploying this application, with potential for complete system compromise through remote code execution if administrative credentials are compromised.

Business Impact: Severe
Compensating Controls
  1. Deploy reverse proxy/load balancer (nginx, Apache) with mandatory HTTPS/TLS encryption between clients and application. 2) Implement network segmentation: restrict application access to internal networks only, block direct internet exposure. 3) Enable WAF rules to detect and block HTTP login attempts, force HTTPS redirects. 4) Disable or restrict administrative functions (file upload) until patched. 5) Implement network intrusion detection to monitor for MitM activities. 6) Require VPN access for all users. 7) Enable detailed audit logging of all authentication and administrative actions.

Threat Intelligence Overview

EPSS Score
1.1%
Top 22% exploitable
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium

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 CRITICAL
CISA KEV No
Public POC Yes
EPSS 1.1%
Patch available No
Active threat No
Deciding rule
CRITICAL severity + public POC available
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
Out-of-Cycle
Exploitation· derived
Poc
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact
Very High

Priority Score

70
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +49
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

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