What is CVE-2018-6834?

CVE-2018-6834 is a medium-severity vulnerability in Etherpad Lite, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-02-08.

How severe is CVE-2018-6834?

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

XSS in Etherpad Lite

CVE-2018-6834

static/js/pad_utils.js in Etherpad Lite before v1.6.3 has XSS via window.location.href.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-02-08 · 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 (59.1th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.1% 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

Etherpad Lite

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/ether/etherpad-lite/releases/tag/1.6.3 (Third Party Advisory, Release Notes)
github.com/ether/etherpad-lite/commit/a03422b09468cdd5f192b05643311c705447588b (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2018-6834?: CVE-2018-6834 is a medium-severity vulnerability in Etherpad Lite, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-02-08.
How severe is CVE-2018-6834?: Medium severity. CVSS v3 base score is 6.1 out of 10.