CVE-2026-13231Network attack vector

Stored XSS via raw response-message rendering

Published Jul 10, 2026 · Updated Jul 10, 2026

Stored XSS in Drupal Advanced Content Feedback before 2.8.0 allows remote authenticated users to execute script in visitors' browsers. The module emits administrator-configured Yes, No, and custom No-response text as raw HTML instead of escaping plain text or filtering formatted text. Attackers need the administer admin feedback permission, and script execution occurs when a visitor receives the configured response, exposing browser-accessible data and page content.

CVSS severity6.1
Medium
EPSS probability0.25%
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 Advanced Content Feedback before 2.8.0 allows remote authenticated users to execute script in visitors' browsers. The module emits administrator-configured Yes, No, and custom No-response text as raw HTML instead of escaping plain text or filtering formatted text. Attackers need the administer admin feedback permission, and script execution occurs when a visitor receives the configured response, exposing browser-accessible data and page content.

The record

CVE
CVE-2026-13231
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
Avatar Uploader Project
Product
Advanced Content Feedback
Classifications
CWE-79, CAPEC-592
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 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=0.0.0 <2.8.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Avatar Uploader Project · Advanced Content Feedbackversion=0.0.0 <2.8.0

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 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')
CAPEC-592Stored XSS

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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