CVE-2024-23191Network attack vector

Stored XSS via unsanitized upsell data attributes

Published Apr 8, 2024 · Updated Nov 4, 2025

Stored XSS in Open-Xchange GmbH OX App Suite frontend 7.10.6-rev40 and 7.6.3-rev54 allows remote authenticated users to run script. The frontend renders attacker-controlled data attributes in account upsell advertisements without sufficient sanitization, executing their contents in a viewer's browser session. Exploitation requires temporary account access or social engineering that leads a user to a maliciously configured account, enabling account-data extraction or malicious API requests.

CVSS severity5.4
Medium
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Open-Xchange GmbH OX App Suite frontend 7.10.6-rev40 and 7.6.3-rev54 allows remote authenticated users to run script. The frontend renders attacker-controlled data attributes in account upsell advertisements without sufficient sanitization, executing their contents in a viewer's browser session. Exploitation requires temporary account access or social engineering that leads a user to a maliciously configured account, enabling account-data extraction or malicious API requests.

The record

CVE
CVE-2024-23191
Published
Apr 8, 2024
Updated
Nov 4, 2025
Vendor
Open-Xchange GmbH
Product
OX App Suite
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 8, 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-rev40
  2. Affected versionversion=0 <=7.6.3-rev54

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open-Xchange GmbH · OX App Suiteversion=0 <=7.10.6-rev40; version=0 <=7.6.3-rev54

Published CVSS scores

5.4Open-Xchange GmbHCVSS:3.1/AV:N/AC:L/PR:L/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
Privilegesauthenticated
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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