XSS in Accellion File Transfer Appliance

CVE-2017-8760

An issue was discovered on Accellion FTA devices before FTA_9_12_180. There is XSS in courier/1000@/index.html with the auth_params parameter. The device tries to use internal WAF filters to stop specific XSS Vulnerabilities. However, these can be bypassed by using some modifications to the payloads, e.g., URL encoding.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

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: 0.012 (67.7th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2017-8760: held from 0.012 to 0.012.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2017-8760?
CVE-2017-8760 is a medium-severity vulnerability in Accellion File Transfer Appliance, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2017-05-05.
How severe is CVE-2017-8760?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2017-8760 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.