CVE-2023-41704Network attack vector

Session script execution via unsanitized email CID replacement

Published Feb 12, 2024 · Updated Nov 4, 2025

Cross-site scripting in Open-Xchange OX App Suite allows remote attackers to inject script code through crafted email CID references. The email CID replacement path accepts a malicious reference that passes the sanitization engine, causing resulting content to execute in a user's session. Execution requires a user to interact with the email and can expose or modify session-accessible data and interrupt the session.

CVSS severity7.1
High
EPSS probability0.53%
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 Open-Xchange OX App Suite allows remote attackers to inject script code through crafted email CID references. The email CID replacement path accepts a malicious reference that passes the sanitization engine, causing resulting content to execute in a user's session. Execution requires a user to interact with the email and can expose or modify session-accessible data and interrupt the session.

The record

CVE
CVE-2023-41704
Published
Feb 12, 2024
Updated
Nov 4, 2025
Vendor
Open-Xchange GmbH
Product
OX App Suite
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 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?

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

  1. Affected versionversion=0 <=7.10.6-rev55
  2. Affected versionversion=0 <=7.6.3-rev71
  3. Affected versionversion=0 <=8.20

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open-Xchange GmbH · OX App Suiteversion=0 <=7.10.6-rev55; version=0 <=7.6.3-rev71; version=0 <=8.20

Published CVSS scores

7.1Open-Xchange GmbHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
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 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')
T1203Exploitation for Client Execution

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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