VulnerabilityDeferred

CVE-2026-42163

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.

CRITICAL 9.8EPSS 0.33%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.33% probability · 26th percentile
CISA KEV: Not listed
Weakness: CWE-284
Source: cve@mitre.org

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.