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TI-2021-04149 Aliases CVE-2021-21043GHSA-7r83-w6r8-fh6w

Reflected Cross-site Scripting (XSS) on version-compare and page-compare tools

Priority LOW 33CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

EPSS 0.03378 88th percentileScored 2026-11-07
Fix Fixed com.adobe.acs:acs-aem-commons (Maven): 4.10.0

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
AdobeExperience Managerup to 4.9.2; up to None—No fix listedCNA
—com.adobe.acs:acs-aem-commons (Maven)before 4.10.04.10.0Patch availableGHSA-7r83-w6r8-fh6w
  • Experience Manager VendorAdobe Affected up to 4.9.2; up to None Fixed in — No fix listed CNA
  • com.adobe.acs:acs-aem-commons (Maven) Vendor— Affected before 4.10.0 Fixed in 4.10.0 Patch available GHSA-7r83-w6r8-fh6w

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:adobe:adobe_consulting_services_commons:*:*:*:*:*:*:*:*up to 4.9.2VulnerableAdobe
  • cpe:2.3:a:adobe:adobe_consulting_services_commons:*:*:*:*:*:*:*:* Versions up to 4.9.2 Vulnerable ·Adobe

Remediation

  • Fix · GHSA-7r83-w6r8-fh6w com.adobe.acs:acs-aem-commons (Maven) Fixed in 4.10.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21043
  2. 2026-10-03 Alias added: GHSA-7r83-w6r8-fh6w

References

Advisory 2

Other 3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences