CVE-2025-26199: CloudClassroom-PHP-Project v1.0 is affected by an insecure credential transmission vulnerability

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2025-26199 is a critical-severity flaw (CVSS 9.8) affecting cloudclassroom-php project. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 sub

Why this priority

Critical severity
Public exploit reference
Remotely exploitable, no login, no user action

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 53%)
CISA exploited list	No
Weakness	CWE-319
Published	2025-06-18
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: vishalmathur

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-06-18 20:15 UTCPublished CVE record published
2026-06-17 09:01 UTCUpdated Record last modified

vishalmathur cloudclassroom-php project DOWNGRADE

Affected: 1.0

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.0

1. Check installed version

apt-cache policy cloudclassroom-php-project || rpm -q cloudclassroom-php-project || cloudclassroom-php-project --version

2. No fixed release: DOWNGRADE to a release before 1.0 (Debian / Ubuntu)

apt-cache madison cloudclassroom-php-project sudo apt install cloudclassroom-php-project=<VERSION_BEFORE_1.0> sudo apt-mark hold cloudclassroom-php-project

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list cloudclassroom-php-project sudo dnf downgrade cloudclassroom-php-project-<VERSION_BEFORE_1.0> sudo dnf versionlock add cloudclassroom-php-project

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-26199?

cloudclassroom-php project: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2025-26199 being exploited?

CVE-2025-26199 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-26199 affect?

CVE-2025-26199 affects cloudclassroom-php project. Severity is critical (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 credentials to potential interception b

How urgent is CVE-2025-26199?

Priority 56/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP vulnerabilities · Wi-Fi vulnerabilities

Related CVEs

CVE-2025-44608 MEDIUM 6.5 DOWNGRADE CloudClassroom-PHP Project v1.0 was discovered to contain a SQL injection vulnerability via the viewid paramet
CVE-2025-46179 CRITICAL 9.8 DOWNGRADE A SQL Injection vulnerability was discovered in the askquery.php file of CloudClassroom-PHP Project v1.0
CVE-2025-46178 MEDIUM 6.1 DOWNGRADE Cross-Site Scripting (XSS) vulnerability exists in askquery.php via the eid parameter in the CloudClassroom PH
CVE-2025-45542 HIGH 7.3 DOWNGRADE SQL injection vulnerability in the registrationform endpoint of CloudClassroom-PHP-Project v1.0
CVE-2025-26198 CRITICAL 9.8 DOWNGRADE CloudClassroom-PHP-Project v1.0 contains a critical SQL Injection vulnerability in the loginlinkadmin.php comp

References

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