What is CVE-2020-15907?

CVE-2020-15907 is a medium-severity vulnerability in Mahara, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-08-07.

How severe is CVE-2020-15907?

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

Is CVE-2020-15907 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Mahara

CVE-2020-15907

In Mahara 19.04 before 19.04.6, 19.10 before 19.10.4, and 20.04 before 20.04.1, certain places could execute file or folder names containing JavaScript.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-08-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.2th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.2% 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

Public proof-of-concept exploits

adeshkolte/My-CVEs

References

bugs.launchpad.net/mahara/+bug/1888163 (Patch, Third Party Advisory)
mahara.org/interaction/forum/topic.php (Vendor Advisory)

Frequently asked questions

What is CVE-2020-15907?: CVE-2020-15907 is a medium-severity vulnerability in Mahara, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-08-07.
How severe is CVE-2020-15907?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-15907 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.