CVE-2021-43264

Severity: low (CVSS 3.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-11-02 · updated 2026-06-17
Weakness: CWE-22

Description

In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, adjusting the path component for the page help file allows attackers to bypass the intended access control for HTML files via directory traversal. It replaces the - character with the / character.

Affected products

mahara: from 20.04.0 before 20.04.5; from 20.10.0 before 20.10.3; from 21.04.0 before 21.04.2 — fixed in 20.04.5, 20.10.3, 21.04.2

How to fix

Upgrade to a fixed version: mahara 20.04.5, 20.10.3, 21.04.2. Check the vendor advisory for mitigations.

References

https://bugs.launchpad.net/mahara/+bug/1944979
https://mahara.org/interaction/forum/topic.php?id=8954
https://bugs.launchpad.net/mahara/+bug/1944979
https://mahara.org/interaction/forum/topic.php?id=8954

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