CVE-2013-4522: Moodle vulnerable to Exposure of Sensitive Information to an Unauthorized Actor

May 13, 2022 (updated May 8, 2025)

lib/filelib.php in Moodle through 2.2.11, 2.3.x before 2.3.10, 2.4.x before 2.4.7, and 2.5.x before 2.5.3 does not send “Cache-Control: private” HTTP headers, which allows remote attackers to obtain sensitive information by requesting a file that had been previously retrieved by a caching proxy server.

References

github.com/advisories/GHSA-vm9c-39jx-q45w
github.com/moodle/moodle
github.com/moodle/moodle/commit/d0041fb110201d3dc1a4546eca8b6108b440d1c5
moodle.org/mod/forum/discuss.php?d=244479
nvd.nist.gov/vuln/detail/CVE-2013-4522

Code Behaviors & Features

Detect and mitigate CVE-2013-4522 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →