CVE-2025-3414Public exploitNetwork attack vector

Stored XSS via unescaped FAQ CSS class

Published Aug 14, 2025 · Updated Aug 14, 2025

Stored XSS in Structured Content (JSON-LD) #wpsc before 1.7.0 allows remote authenticated users to execute script through an FAQ block. The FAQ block writes its Additional CSS class option into an HTML class attribute without validation or output escaping. Contributor access is sufficient to save the payload, but execution requires a user to preview or view the affected post and interact with its FAQ element.

CVSS severity5.4
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

Stored XSS in Structured Content (JSON-LD) #wpsc before 1.7.0 allows remote authenticated users to execute script through an FAQ block. The FAQ block writes its Additional CSS class option into an HTML class attribute without validation or output escaping. Contributor access is sufficient to save the payload, but execution requires a user to preview or view the affected post and interact with its FAQ element.

The record

CVE
CVE-2025-3414
Published
Aug 14, 2025
Updated
Aug 14, 2025
Vendor
Gordon Böhme, Antonio Leutsch
Product
Structured Content (JSON-LD) #wpsc
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 14, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 14, 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 <1.7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Gordon Böhme, Antonio Leutsch · Structured Content (JSON-LD) #wpscversion=0 <1.7.0

Published CVSS scores

5.4CISA-ADPCVSS:3.1/AV:N/AC:L/PR:L/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 exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

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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