XSS in Codeigniter
CVE-2013-4891
The xss_clean function in CodeIgniter before 2.1.4 might allow remote attackers to bypass an intended protection mechanism and conduct cross-site scripting (XSS) attacks via an unclosed HTML tag.
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: 0.014 (71.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 71.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- nealpoole.com/blog/2013/07/codeigniter-21-xss-clean-filter-bypass/ (Exploit, Third Party Advisory)
- github.com/bcit-ci/CodeIgniter/issues/4020 (Third Party Advisory, Issue Tracking)
- www.codeigniter.com/userguide2/changelog.html (Release Notes)
Frequently asked questions
- What is CVE-2013-4891?
- CVE-2013-4891 is a medium-severity vulnerability in Codeigniter, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-02-21.
- How severe is CVE-2013-4891?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2013-4891 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.