What is CVE-2018-6182?

CVE-2018-6182 is a medium-severity vulnerability in Mahara, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-04-09.

How severe is CVE-2018-6182?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Mahara

CVE-2018-6182

Mahara 16.10 before 16.10.9 and 17.04 before 17.04.7 and 17.10 before 17.10.4 are vulnerable to bad input when TinyMCE is bypassed by POST packages. Therefore, Mahara should not rely on TinyMCE's code stripping alone but also clean input on the server / PHP side as one can create own packets of POST data containing bad content with which to hit the server.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-04-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: -0.000

Affected products

Mahara

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

bugs.launchpad.net/mahara/+bug/1744789 (Third Party Advisory, Issue Tracking)
mahara.org/interaction/forum/topic.php (Vendor Advisory)

Frequently asked questions

What is CVE-2018-6182?: CVE-2018-6182 is a medium-severity vulnerability in Mahara, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-04-09.
How severe is CVE-2018-6182?: Medium severity. CVSS v3 base score is 6.1 out of 10.