CVE-2026-3213Network attack vector

Reflected XSS via unsanitized firewall response

Published Mar 25, 2026 · Updated Mar 25, 2026

Reflected XSS in Drupal Anti-Spam by CleanTalk before 9.7.0 allows remote attackers to execute script through unsanitized input. The firewall challenge or block response places user-controlled input into generated HTML without sufficient sanitization. Exploitation requires a user to be challenged or blocked by the firewall and to interact with the crafted response, limiting impact to browser-context data access and modification.

CVSS severity4.7
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in Drupal Anti-Spam by CleanTalk before 9.7.0 allows remote attackers to execute script through unsanitized input. The firewall challenge or block response places user-controlled input into generated HTML without sufficient sanitization. Exploitation requires a user to be challenged or blocked by the firewall and to interact with the crafted response, limiting impact to browser-context data access and modification.

The record

CVE
CVE-2026-3213
Published
Mar 25, 2026
Updated
Mar 25, 2026
Vendor
Avatar Uploader Project
Product
Anti-Spam by CleanTalk
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 25, 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 <9.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Avatar Uploader Project · Anti-Spam by CleanTalkversion=0.0.0 <9.7.0

Published CVSS scores

4.7CISA-ADPCVSS:3.1/AV:N/AC:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

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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