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
Published Feb 21, 2018
6.1
MEDIUMCVSS 3.0
EPSS 1.43%
Description
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.
Affected products
No data.
- < 2.1.4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.43% (0.01425) | 71.95th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.47% (0.01475) | 70.35th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.31% (0.00310) | 51.96th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.12% (0.00122) | 48.15th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.12% (0.00122) | 46.77th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.12% (0.00122) | 44.75th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
References (3)
- https://github.com/bcit-ci/CodeIgniter/issues/4020 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://nealpoole.com/blog/2013/07/codeigniter-21-xss-clean-filter-bypass/ x_refsource_MISCExploitThird Party Advisory
- https://www.codeigniter.com/userguide2/changelog.html x_refsource_CONFIRMRelease Notes
| Link | Providers | Tags |
|---|---|---|
| https://github.com/bcit-ci/CodeIgniter/issues/4020 | x_refsource_CONFIRMIssue TrackingThird Party Advisory | |
| https://nealpoole.com/blog/2013/07/codeigniter-21-xss-clean-filter-bypass/ | x_refsource_MISCExploitThird Party Advisory | |
| https://www.codeigniter.com/userguide2/changelog.html | x_refsource_CONFIRMRelease Notes |
Change history (0)
No recorded changes yet.