Information disclosure in N/a

CVE-2026-42164

Mahara before 25.04.5 and 26.04.0 is vulnerable in the Text block/section functionality when a call is crafted in a certain way that allows it to recall the backed-up content from another Text section.

Vulnerability class: Information Disclosure

Published · last modified .

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (44.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-42164: held from 0.003 to 0.006.

EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-42164?
CVE-2026-42164 is a critical-severity vulnerability in N/a, classified under Information Disclosure. CVSS score: 9.8/10. Published 2026-08-17.
How severe is CVE-2026-42164?
Critical severity. CVSS v3 base score is 9.8 out of 10.