CVE-2026-42163
LTI flaw in Mahara allows unauthorized internal account access.
Is CVE-2026-42163 being exploited?
Not confirmed. CVE-2026-42163 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.33% probability of exploitation in the next 30 days.
How severe is CVE-2026-42163?
CVE-2026-42163 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-42163?
Yes. A fix has been recorded for CVE-2026-42163. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-42163 affect?
CVE-2026-42163 affects Mahara versions prior to 25.04.5, Mahara versions prior to 26.04.0. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-42163?
Upgrade to 25.04.5 or 26.04.0+ immediately; disable LTI if you cannot patch.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can use LTI 1.1/1.3 to access or hijack internal accounts, leading to data exposure and privilege misuse.
Immediate action required