What’s Vulnerable › Vulnerabilities

CVE-2021-21043: Reflected Cross-site Scripting (XSS) on version-compare and page-compare tools

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-02-02 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• Adobe Consulting Services Commons: through 4.9.2

References

• https://github.com/Adobe-Consulting-Services/acs-aem-commons/security/advisories/GHSA-f92j-qf46-p6vm
• https://github.com/Adobe-Consulting-Services/acs-aem-commons/security/advisories/GHSA-f92j-qf46-p6vm

Get alerted when CVE-2021-21043 or the next vulnerability affects your stack