What is CVE-2017-17911?

CVE-2017-17911 is a medium-severity vulnerability in Archon, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-12-27.

How severe is CVE-2017-17911?

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

XSS in Archon

CVE-2017-17911

packages/core/contact.php in Archon 3.21 rev-1 has XSS in the referer parameter in an index.php?p=core/contact request, aka Open Bug Bounty ID OBB-278503.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2017-12-27 · 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 (47.7th percentile), scored 2026-10-24.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% 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

Archon — versions 3.21

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.openbugbounty.org/reports/278503/ (Exploit, Third Party Advisory, Issue Tracking)

Frequently asked questions

What is CVE-2017-17911?: CVE-2017-17911 is a medium-severity vulnerability in Archon, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-12-27.
How severe is CVE-2017-17911?: Medium severity. CVSS v3 base score is 6.1 out of 10.