CVE-2025-3271Network attack vector

Authenticated script execution via undisclosed DOM sink

Published Sep 9, 2026 · Updated Sep 9, 2026

DOM-based XSS in OpenText Documentum Webtop before 16.7.1 allows remote authenticated users to run script in a user's browser. OpenText identifies the flaw as DOM-based XSS but does not publish the affected client-side source, DOM sink, or untrusted input path. Exploitation requires low-privileged access and active user interaction, permitting script execution in the Webtop origin with limited data read or modification.

CVSS severity4.8
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DOM-based XSS in OpenText Documentum Webtop before 16.7.1 allows remote authenticated users to run script in a user's browser. OpenText identifies the flaw as DOM-based XSS but does not publish the affected client-side source, DOM sink, or untrusted input path. Exploitation requires low-privileged access and active user interaction, permitting script execution in the Webtop origin with limited data read or modification.

The record

CVE
CVE-2025-3271
Published
Sep 9, 2026
Updated
Sep 9, 2026
Vendor
OpenText
Product
Documentum Webtop
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 2026Record 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 <16.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenText · Documentum Webtopversion=0 <16.7.1

Published CVSS scores

4.8OpenTextCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA: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
Privilegesauthenticated
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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