CVE-2013-1938Public exploitNetwork attack vector

Script execution via unsanitized spell-check dictionary parameter

Published Feb 12, 2020 · Updated Aug 6, 2024

Reflected XSS in Zimbra Collaboration 2013 allows remote attackers to execute script in a user's browser through aspell.php. The spell-check service copies the dictionary request value into an HTML form without output encoding when the text value is empty. A victim must follow a crafted link to an exposed spell service, normally on port 7780, allowing script execution in that service's origin.

CVSS severity6.1
Medium
EPSS probability3.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Zimbra Collaboration 2013 allows remote attackers to execute script in a user's browser through aspell.php. The spell-check service copies the dictionary request value into an HTML form without output encoding when the text value is empty. A victim must follow a crafted link to an exposed spell service, normally on port 7780, allowing script execution in that service's origin.

The record

CVE
CVE-2013-1938
Published
Feb 12, 2020
Updated
Aug 6, 2024
Vendor
Zimbra
Product
Zimbra Collaboration
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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?

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

  1. Affected versionversion=2013

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Zimbra · Zimbra Collaborationversion=2013

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
6.1NIST NVDCVSS: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.

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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 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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