CVE-2025-3901Network attack vector

Stored XSS via unfiltered site-alert text

Published Apr 23, 2025 · Updated Apr 23, 2025

Stored XSS in Drupal Bootstrap Site Alert before 1.13.0 and 3.0.0 through 3.0.3 allows remote authenticated users to run script. The module renders administrator-supplied site-alert text without sufficient filtering, so embedded markup reaches every page that displays the alert. Exploitation requires the administer bootstrap site alerts permission and executes script in the browsers of visitors who view the crafted alert.

CVSS severity6.1
Medium
EPSS probability0.23%
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 Drupal Bootstrap Site Alert before 1.13.0 and 3.0.0 through 3.0.3 allows remote authenticated users to run script. The module renders administrator-supplied site-alert text without sufficient filtering, so embedded markup reaches every page that displays the alert. Exploitation requires the administer bootstrap site alerts permission and executes script in the browsers of visitors who view the crafted alert.

The record

CVE
CVE-2025-3901
Published
Apr 23, 2025
Updated
Apr 23, 2025
Vendor
OAuth.js
Product
Bootstrap Site Alert
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Apr 23, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 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 <1.13.0
  2. Affected versionversion=3.0.0 <3.0.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

OAuth.js · Bootstrap Site Alertversion=0.0.0 <1.13.0; version=3.0.0 <3.0.4

Published CVSS scores

6.1CISA-ADPCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
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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