CVE-2019-18209

CVE-2019-18209 is a medium-severity vulnerability in Etherpad with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Description

templates/pad.html in Etherpad-Lite 1.7.5 has XSS when the browser does not encode the path of the URL, as demonstrated by Internet Explorer.

Frequently asked questions

What is CVE-2019-18209?
templates/pad.html in Etherpad-Lite 1.7.5 has XSS when the browser does not encode the path of the URL, as demonstrated by Internet Explorer.
How severe is CVE-2019-18209?
CVE-2019-18209 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2019-18209 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-18209?
CVE-2019-18209 affects Etherpad. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-18209?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-18209 published?
CVE-2019-18209 was published on 2019-10-19 and last updated on 2026-06-17.

References

Affected products (1)

More vulnerabilities in Etherpad

All CVEs affecting Etherpad →

Other CWE-79 (Cross-site Scripting (XSS)) vulnerabilities

Browse all CWE-79 (Cross-site Scripting (XSS)) vulnerabilities →