CVE-2026-28754Network attack vector

Victim-context script execution via unvalidated report data

Published Apr 3, 2026 · Updated Apr 3, 2026

Stored XSS in the Distribution Lists report in ManageEngine Exchange Reporter Plus before 5802 allows remote authenticated users to run scripts. The report places attacker-controlled Exchange distribution-list data into rendered output without proper input validation. Exploitation requires Exchange administrative privileges and a victim to open the affected report, after which the script acts with the victim's application privileges.

CVSS severity7.3
High
EPSS probability0.54%
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 the Distribution Lists report in ManageEngine Exchange Reporter Plus before 5802 allows remote authenticated users to run scripts. The report places attacker-controlled Exchange distribution-list data into rendered output without proper input validation. Exploitation requires Exchange administrative privileges and a victim to open the affected report, after which the script acts with the victim's application privileges.

The record

CVE
CVE-2026-28754
Published
Apr 3, 2026
Updated
Apr 3, 2026
Vendor
Zoho Corporation
Product
ManageEngine Exchange Reporter Plus
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <5802

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Zoho Corporation · ManageEngine Exchange Reporter Plusversion=0 <5802

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
7.3ManageEngineCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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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