What is CVE-2017-6535?

CVE-2017-6535 is a medium-severity vulnerability in Webpagetest Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-03-08.

How severe is CVE-2017-6535?

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

XSS in Webpagetest Project

CVE-2017-6535

Multiple Cross-Site Scripting (XSS) issues were discovered in webpagetest 3.0. The vulnerabilities exist due to insufficient filtration of user-supplied data (benchmark, url) passed to the webpagetest-master/www/benchmarks/trendurl.php URL. An attacker could execute arbitrary HTML and script code in a browser in the context of the vulnerable website.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-03-08 · 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: 0.006 (48.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Webpagetest Project — versions 3.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.securityfocus.com/bid/96935 (vdb-entry)
github.com/WPO-Foundation/webpagetest/issues/832 (Exploit, Patch, Issue Tracking)

Frequently asked questions

What is CVE-2017-6535?: CVE-2017-6535 is a medium-severity vulnerability in Webpagetest Project, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-03-08.
How severe is CVE-2017-6535?: Medium severity. CVSS v3 base score is 6.1 out of 10.