CVE-2013-6242Public exploitNetwork attack vector

Script execution via email subject TITLE breakout

Published Jan 2, 2020 · Updated Aug 6, 2024

Cross-site scripting in affected Open-Xchange AppSuite 6.22.3 and 6.22.4 builds allows remote attackers to execute script through an email subject. The frontend6 mail renderer processes a misplaced closing TITLE tag followed by script tags in the subject as executable markup. The issue affects builds before 6.22.3-rev5 in the 6.22.3 branch and before 6.22.4-rev12 in the 6.22.4 branch; execution requires a recipient to open the crafted message in the OX6 UI and enables session hijacking or unwanted web-interface actions.

CVSS severity6.1
Medium
EPSS probability1.63%
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 affected Open-Xchange AppSuite 6.22.3 and 6.22.4 builds allows remote attackers to execute script through an email subject. The frontend6 mail renderer processes a misplaced closing TITLE tag followed by script tags in the subject as executable markup. The issue affects builds before 6.22.3-rev5 in the 6.22.3 branch and before 6.22.4-rev12 in the 6.22.4 branch; execution requires a recipient to open the crafted message in the OX6 UI and enables session hijacking or unwanted web-interface actions.

The record

CVE
CVE-2013-6242
Published
Jan 2, 2020
Updated
Aug 6, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-80, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 2, 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?

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

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 exploitPublished

Weakness, pattern, technique

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
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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