CVE-2025-26198: CloudClassroom-PHP-Project v1.0 contains a critical SQL Injection vulnerability in the loginlinkadmin.php comp

This week

CRITICAL 9.8REMOTEDOWNGRADE

CVE-2025-26198 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 contains a critical SQL Injection vulnerability in the loginlinkadmin.php component. The application fails to sanitize user-supplied input in the admin login form before directly including it in SQL queries. This allows unauthenticated attackers to inject arbitrary SQL payloads and bypass authentication, gaining unauthorized administrative access. The vulnerability is triggered when an attacker supplies specially c

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 50%)
CISA exploited list	No
Weakness	CWE-89
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 18:15 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-2025-26198?

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

Is CVE-2025-26198 being exploited?

CVE-2025-26198 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-2025-26198 affect?

CVE-2025-26198 affects cloudclassroom-php project. Severity is critical (CVSS 9.8). CloudClassroom-PHP-Project v1.0 contains a critical SQL Injection vulnerability in the loginlinkadmin.php component. The application fails to sanitize user-supplied input in the admin login form before directly including it in SQL queries.

How urgent is CVE-2025-26198?

Priority 57/100. Critical severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

PHP 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-2025-26199 CRITICAL 9.8 DOWNGRADE CloudClassroom-PHP-Project v1.0 is affected by an insecure credential transmission vulnerability

References

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