CVE-2021-21028
Reflected Cross-site Scripting in ACS Commons
Description
### Impact ACS Commons version 4.9.2 (and earlier) suffers from a Reflected Cross-site Scripting (XSS) vulnerability in version-compare and page-compare due to invalid JCR characters that are not handled correctly. An attacker could potentially exploit this vulnerability to inject malicious JavaScript content into vulnerable form fields and execute it within the context of the victim's browser. Exploitation of this issue requires user interaction in order to be successful. ### Patches This issue has been resolved in v4.10.0 ### Workarounds No workaround exist. ### References N/A ### For more information If you have any questions or comments about this advisory open an issue in acs-aem-commons. ### Credit This issue was discovered and reported by Christopher Whipp (Christopher.Whipp@servicesaustralia.gov.au).
How to fix CVE-2021-21028
To remediate CVE-2021-21028, upgrade the affected package to a fixed version below.
- —upgrade to 4.10.0 or later
Is CVE-2021-21028 being exploited?
Moderate — EPSS is 23.0%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (1)
- from 0, < 4.10.0
References (4)
- ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-21028
- WEBgithub.com/Adobe-Consulting-Services/acs-aem-commons/commit/14d769c86606c4ce9a93c47a19f87e1ad72788d6
- WEBgithub.com/Adobe-Consulting-Services/acs-aem-commons/security/advisories/GHSA-f92j-qf46-p6vm
- WEBhelpx.adobe.com/security/products/acrobat/apsb21-09.html