What is CVE-2020-8981?

CVE-2020-8981 is a medium-severity vulnerability in Mantisbt Source Integration, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-02-13.

How severe is CVE-2020-8981?

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

XSS in Mantisbt Source Integration

CVE-2020-8981

A cross-site scripting (XSS) vulnerability was discovered in the Source Integration plugin before 1.6.2 and 2.x before 2.3.1 for MantisBT. The repo_delete.php Delete Repository page allows execution of arbitrary code via a repo name (if CSP settings permit it). This is related to CVE-2018-16362.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-02-13 · 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: 0.011 (63.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Mantisbt Source Integration

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/mantisbt-plugins/source-integration/issues/338 (Third Party Advisory)
github.com/mantisbt-plugins/source-integration/commit/270675c964c675829fe010f9f… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8981?: CVE-2020-8981 is a medium-severity vulnerability in Mantisbt Source Integration, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-02-13.
How severe is CVE-2020-8981?: Medium severity. CVSS v3 base score is 6.1 out of 10.