What’s Vulnerable › Vulnerabilities

CVE-2021-27956

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-20 · updated 2026-06-17
• Weakness: CWE-79

Description

Zoho ManageEngine ADSelfService Plus before 6104 allows stored XSS on the /webclient/index.html#/directory-search user search page via the e-mail address field.

Affected products

• ManageEngine ADSelfService Plus: before 6.1; 6.1, 6.1-6100, 6.1-6103 — fixed in 6.1

How to fix

Upgrade to a fixed version: ManageEngine ADSelfService Plus 6.1. Check the vendor advisory for mitigations.

References

• https://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes
• https://raxis.com/blog/cve-2021-27956-manage-engine-xss
• https://www.manageengine.com
• https://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes
• https://raxis.com/blog/cve-2021-27956-manage-engine-xss
• https://www.manageengine.com

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