CVE-2024-43432: Moodle: authorization headers preserved between "emulated redirects"

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-11-11 · updated 2026-06-17
Weakness: CWE-319

Description

A flaw was found in moodle. The cURL wrapper in Moodle strips HTTPAUTH and USERPWD headers during emulated redirects, but retains other original request headers, so HTTP authorization header information could be unintentionally sent in requests to redirect URLs.

Affected products

Moodle: before 4.1.12; from 4.2.0 before 4.2.9; from 4.3.0 before 4.3.6; from 4.4.0 before 4.4.2 — fixed in 4.1.12, 4.2.9, 4.3.6, 4.4.2

How to fix

Upgrade to a fixed version: Moodle 4.1.12, 4.2.9, 4.3.6, 4.4.2. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2304260
https://moodle.org/mod/forum/discuss.php?d=461200

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