What is CVE-2020-15231?

CVE-2020-15231 is a critical-severity vulnerability in Mapfish Mapfish-Print, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2020-10-02.

How severe is CVE-2020-15231?

Critical severity. CVSS v3 base score is 9.3 out of 10.

XSS in Mapfish Mapfish-Print

CVE-2020-15231

In mapfish-print before version 3.24, a user can use the JSONP support to do a Cross-site scripting.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-10-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.1th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Mapfish Mapfish-Print — versions < 3.24
Mapfish Print

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/mapfish/mapfish-print/security/advisories/GHSA-w534-q4xf-h5v2 (Third Party Advisory)
github.com/mapfish/mapfish-print/pull/1397/commits/89155f2506b9cee822e15ce60cca… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-15231?: CVE-2020-15231 is a critical-severity vulnerability in Mapfish Mapfish-Print, classified under Cross-site Scripting. CVSS score: 9.3/10. Published 2020-10-02.
How severe is CVE-2020-15231?: Critical severity. CVSS v3 base score is 9.3 out of 10.