CVE-2026-42163 — CRITICAL (9.8)

Vulnerability Description

Mahara before 25.04.5 and 26.04.0 is vulnerable to unauthorized access to internal accounts via Learning Tools Interoperability (LTI) under certain circumstances. This applies to LTI 1.1 and LTI 1.3 Advantage.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-284

References

https://mahara.org/interaction/forum/topic.php?id=10077

FAQ

What is CVE-2026-42163?

CVE-2026-42163 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Mahara before 25.04.5 and 26.04.0 is vulnerable to unauthorized access to internal accounts via Learning Tools Interoperability (LTI) under certain circumstances. This applies to LTI 1.1 and LTI 1.3 A...

How severe is CVE-2026-42163?

CVE-2026-42163 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-42163?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.