XSS in Sencha Ext Js
CVE-2018-8046
The getTip() method of Action Columns of Sencha Ext JS 4 to 6 before 6.6.0 is vulnerable to XSS attacks, even when passed HTML-escaped data. This framework brings no built-in XSS protection, so the developer has to ensure that data is correctly sanitized. However, the getTip() method of Action Columns takes HTML-escaped data and un-escapes it. If the tooltip contains user-controlled data, an attacker could exploit this to create a cross-site scripting attack, even when developers took precautions and escaped data.
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: 0.666 (99.3th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.666 · newest: 0.666 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- examples.sencha.com/extjs/6.6.0/release-notes.html (Release Notes, Vendor Advisory)
- seclists.org/fulldisclosure/2018/Jul/8 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-8046?
- CVE-2018-8046 is a medium-severity vulnerability in Sencha Ext Js, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-07-05.
- How severe is CVE-2018-8046?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2018-8046 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.