CVE-2025-30190Network attack vector

Account-context script execution via unescaped user IDs

Published Nov 27, 2025 · Updated Dec 3, 2025

Cross-site scripting in affected OX App Suite office releases allows remote attackers to execute script through a crafted office document. OX Documents inserts unescaped user IDs from malicious document content into the editor, allowing that content to inject JavaScript during editing. A user must edit the crafted document; the code runs in that user's account context and can perform unintended actions or exfiltrate sensitive information.

CVSS severity5.4
Medium
EPSS probability0.18%
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 OX App Suite office releases allows remote attackers to execute script through a crafted office document. OX Documents inserts unescaped user IDs from malicious document content into the editor, allowing that content to inject JavaScript during editing. A user must edit the crafted document; the code runs in that user's account context and can perform unintended actions or exfiltrate sensitive information.

The record

CVE
CVE-2025-30190
Published
Nov 27, 2025
Updated
Dec 3, 2025
Vendor
Open-Xchange GmbH
Product
OX App Suite
Classifications
CWE-79, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 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 <=8.35.1513817
  2. Affected versionversion=0 <=8.39.1565928
  3. Affected versionversion=0 <=8.40.1565934
  4. Affected versionversion=0 <=8.41.1523927

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Open-Xchange GmbH · OX App Suiteversion=0 <=8.35.1513817; version=0 <=8.39.1565928; version=0 <=8.40.1565934; version=0 <=8.41.1523927

Published CVSS scores

5.4Open-Xchange GmbHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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')
T1204.002Malicious File

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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