What is CVE-2019-15483?

CVE-2019-15483 is a medium-severity vulnerability in Boltcms Bolt, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-08-23.

How severe is CVE-2019-15483?

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

XSS in Boltcms Bolt

CVE-2019-15483

Bolt before 3.6.10 has XSS via a title that is mishandled in the system log.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-08-23 · 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: 0.009 (56.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Boltcms Bolt

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/bolt/bolt/releases/tag/v3.6.10 (Third Party Advisory, Issue Tracking)
github.com/bolt/bolt/pull/7802 (Patch, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2019-15483?: CVE-2019-15483 is a medium-severity vulnerability in Boltcms Bolt, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-08-23.
How severe is CVE-2019-15483?: Medium severity. CVSS v3 base score is 6.1 out of 10.