EUVD-2026-76212
GHSA-m3pj-g42c-wf98
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Patchstack explicitly labels this unauthenticated; PR:N applied over supplied PR:L pending vendor clarification, as the description is authoritative on access requirements.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
2DescriptionCVE.org
Unauthenticated PHP Object Injection in Masteriyo - LMS <= 3.4.0 versions.
AnalysisAI
PHP Object Injection in the Masteriyo LMS WordPress plugin (versions <= 3.4.0) allows remote attackers to inject a crafted serialized PHP payload, potentially enabling arbitrary code execution via a PHP gadget chain present in the environment. The vulnerability is described as unauthenticated in the Patchstack disclosure title, though the supplied CVSS vector specifies PR:L - a discrepancy that materially affects real-world risk assessment and requires vendor clarification. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The vulnerable endpoint must be reachable over the network and the target must be running Masteriyo LMS plugin version 3.4.0 or earlier on a WordPress installation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 8.8 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) signals a high-severity network-exploitable flaw requiring only low-privilege access. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the Masteriyo LMS plugin to the version released after 3.4.0 as documented in the Patchstack advisory at https://patchstack.com/database/wordpress/plugin/learning-management-system/vulnerability/wordpress-masteriyo-lms-plugin-3-4-0-php-object-injection-vulnerability - verify the exact patched version number from that page, as no specific fix version number was provided in the source data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, contact Masteriyo support directly to clarify the authentication requirement for this vulnerability (conflicting vendor documentation indicates either unauthenticated or low-privilege access needed) and inventory all WordPress installations running Masteriyo LMS 3.4.0 or earlier. …
Sign in for detailed remediation steps and compensating controls.
Threat intelligence, references, and detailed analysis are available after sign-in.
In PHP versions 7.1.x below 7.1.33, 7.2.x below 7.2.24 and 7.3.x below 7.3.11 in certain configurations of FPM setup it
sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI script (aka php-cgi), does not
(1) boardData102.php, (2) boardData103.php, (3) boardDataJP.php, (4) boardDataNA.php, and (5) boardDataWW.php in Netgear
The '/common/download_agent_installer.php' script in the Quest KACE System Management Appliance 8.0.318 is accessible by
ProjectSend versions prior to r1720 are affected by an improper authentication vulnerability. Rated critical severity (C
Roundcube Webmail contains a critical PHP object deserialization vulnerability (CVE-2025-49113, CVSS 9.9) that allows au
Util/PHP/eval-stdin.php in PHPUnit before 4.8.28 and 5.x before 5.6.3 allows remote attackers to execute arbitrary PHP c
Palo Alto Networks PAN-OS management web interface contains an authentication bypass allowing unauthenticated attackers
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
Nagios XI version xi-5.7.5 is affected by OS command injection. Rated high severity (CVSS 8.8), this vulnerability is re
The get_referers function in /opt/ws/bin/sblistpack in Sophos Web Appliance before 3.7.9.1 and 3.8 before 3.8.1.1 allows
The Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1
Same weakness CWE-502 – Deserialization of Untrusted Data
View allSame technique Deserialization
View allShare
External POC / Exploit Code
Leaving vuln.today