CVE-2022-45149

A vulnerability was found in Moodle which exists due to insufficient validation of the HTTP request origin in course redirect URL. A user's CSRF token was unnecessarily included in the URL when being redirected to a course they have just restored. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website. This flaw allows an attacker to perform cross-site request forgery attacks.

A victim's authenticated browser session is used to submit forged requests to an application that cannot distinguish them from legitimate ones. Typical impact: state-changing actions performed as the victim without their consent.

CVE-2022-45149 has a CVSS score of 5.4 (Medium). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (3.9.18, 3.11.11, 4.0.5); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2022-45149? CVE-2022-45149 is a medium-severity cross-site request forgery (CSRF) vulnerability in moodle/moodle (composer), affecting versions >= 3.9.0, < 3.9.18. It is fixed in 3.9.18, 3.11.11, 4.0.5. A victim's authenticated browser session is used to submit forged requests to an application that cannot distinguish them from legitimate ones.
2. How severe is CVE-2022-45149? CVE-2022-45149 has a CVSS score of 5.4 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of moodle/moodle are affected by CVE-2022-45149? moodle/moodle (composer) versions >= 3.9.0, < 3.9.18 is affected.
4. Is there a fix for CVE-2022-45149? Yes. CVE-2022-45149 is fixed in 3.9.18, 3.11.11, 4.0.5. Upgrade to this version or later.
5. Is CVE-2022-45149 exploitable, and should I be worried? Whether CVE-2022-45149 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2022-45149 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2022-45149?
   • Upgrade moodle/moodle to 3.9.18 or later
   • Upgrade moodle/moodle to 3.11.11 or later
   • Upgrade moodle/moodle to 4.0.5 or later

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