What’s Vulnerable › Vulnerabilities

CVE-2021-43265

• Severity: medium (CVSS 5.4 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-79

Description

In Mahara before 20.04.5, 20.10.3, 21.04.2, and 21.10.0, certain tag syntax could be used for XSS, such as via a SCRIPT element.

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/1944633
• https://mahara.org/interaction/forum/topic.php?id=8953
• https://bugs.launchpad.net/mahara/+bug/1944633
• https://mahara.org/interaction/forum/topic.php?id=8953

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