CVE-2025-11570Network attack vector

Script execution via unescaped safe-HTML link output

Published Oct 10, 2025 · Updated Oct 10, 2025

Cross-site scripting in Drupal Pattern Lab Unified Twig Extensions 0.1.0 and earlier allows remote authenticated users to execute scripts. The example link.function.php callback concatenates unescaped title, URL, and class values into anchor markup and marks the result as safe HTML. Exploitation requires execution outside Drupal and a user to render attacker-controlled link data, enabling script execution in that user's browser.

CVSS severity4.6
Medium
EPSS probability0.22%
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 Drupal Pattern Lab Unified Twig Extensions 0.1.0 and earlier allows remote authenticated users to execute scripts. The example link.function.php callback concatenates unescaped title, URL, and class values into anchor markup and marks the result as safe HTML. Exploitation requires execution outside Drupal and a user to render attacker-controlled link data, enabling script execution in that user's browser.

The record

CVE
CVE-2025-11570
Published
Oct 10, 2025
Updated
Oct 10, 2025
Vendor
Drupal Pattern Lab
Product
Unified Twig Extensions
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 10, 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=0.0.0 <*

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Drupal Pattern Lab · Unified Twig Extensionsversion=0.0.0 <*

Published CVSS scores

4.6SnykCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
1.9SnykCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

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')
T1059.007JavaScript/JScript

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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