CVE-2019-8945Network attack vector

Script execution in a user's web session

Published Jan 27, 2020 · Updated Aug 4, 2024

Persistent XSS in Zimbra Collaboration 8.7.x through 8.8.11P2 allows remote attackers to execute script in a user's browser. The public record does not identify the affected interface, input field, storage path, or output-rendering operation that fails to neutralize attacker-controlled content. Exploitation requires a user to render the stored content, and the script runs in that user's Zimbra web session; no server-side code execution or service interruption is reported.

CVSS severity6.1
Medium
EPSS probability1.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Persistent XSS in Zimbra Collaboration 8.7.x through 8.8.11P2 allows remote attackers to execute script in a user's browser. The public record does not identify the affected interface, input field, storage path, or output-rendering operation that fails to neutralize attacker-controlled content. Exploitation requires a user to render the stored content, and the script runs in that user's Zimbra web session; no server-side code execution or service interruption is reported.

The record

CVE
CVE-2019-8945
Published
Jan 27, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 27, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
4.3NIST NVDAV:N/AC:M/Au:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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