CVE-2023-45206Network attack vector

Cross-site scripting via unsanitized help content

Published Feb 13, 2024 · Updated May 7, 2025

Cross-site scripting in Zimbra Collaboration 8.8.15, 9.0, and 10.0 allows remote attackers to inject script through webmail help documents. The webmail help endpoint renders attacker-supplied JavaScript or HTML without adequate neutralization in the robohelp package. Exploitation requires a user to load the crafted help content; successful script execution can read or alter data available to that user's browser session.

CVSS severity6.1
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Zimbra Collaboration 8.8.15, 9.0, and 10.0 allows remote attackers to inject script through webmail help documents. The webmail help endpoint renders attacker-supplied JavaScript or HTML without adequate neutralization in the robohelp package. Exploitation requires a user to load the crafted help content; successful script execution can read or alter data available to that user's browser session.

The record

CVE
CVE-2023-45206
Published
Feb 13, 2024
Updated
May 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2024CVE publishedPublication date reported by the CVE source.
  2. May 7, 2025Record 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 privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
6.1CISACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1189Drive-by Compromise

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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