silverstripe/silverstripe-cms · Security
Silverstripe History XSS Vulnerability
- GHSA ID
- GHSA-6hh6-59j2-qrxw
- Severity
- medium
- Published
- Updated
- CVSS
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- CVSS v3
- 6.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Description
A cross-site scripting vulnerability has been discovered in the CMS page history tab.
This vulnerability can only be exploited if a user with CMS access has posted malicious or unescaped HTML into any of the text fields on a page, and if the "compare mode" option is selected. The HTML will be embedded into the page unescaped.
This has been resolved by performing the text comparison in a HTML friendly way.
CWEs
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')