What is CVE-2018-16481?

CVE-2018-16481 is a medium-severity vulnerability in HackerOne Html-Pages, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-02-01.

How severe is CVE-2018-16481?

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

XSS in HackerOne Html-Pages

CVE-2018-16481

A XSS vulnerability was found in html-page <=2.1.1 that allows malicious Javascript code to be executed in the user's browser due to the absence of sanitization of the paths before rendering.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-02-01 · 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 (50.9th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.9% 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

HackerOne Html-Pages — versions <=2.1.1
Html-Pages Project

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

hackerone.com/reports/330356 (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2018-16481?: CVE-2018-16481 is a medium-severity vulnerability in HackerOne Html-Pages, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-02-01.
How severe is CVE-2018-16481?: Medium severity. CVSS v3 base score is 6.1 out of 10.