CVE-2021-31813Public exploitNetwork attack vector

Stored script execution via unescaped AD usernames

Published Jul 1, 2021 · Updated Aug 3, 2024

Stored XSS in Zoho ManageEngine Applications Manager before 15130 allows remote authenticated users to execute script via imported AD names. The /admin/userconfiguration.do import view inserts fetched Active Directory first- and last-name values into HTML without escaping, so script tags execute when the record is selected. Exploitation requires control of an AD user name and interaction by an Applications Manager user; executed script can read browser-accessible data or alter the page in that user’s session.

CVSS severity5.4
Medium
EPSS probability78.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Zoho ManageEngine Applications Manager before 15130 allows remote authenticated users to execute script via imported AD names. The /admin/userconfiguration.do import view inserts fetched Active Directory first- and last-name values into HTML without escaping, so script tags execute when the record is selected. Exploitation requires control of an AD user name and interaction by an Applications Manager user; executed script can read browser-accessible data or alter the page in that user’s session.

The record

CVE
CVE-2021-31813
Published
Jul 1, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 1, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
3.5NIST NVDAV:N/AC:M/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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