CVE-2025-15463Public exploitNetwork attack vectorHinoki check available

Unauthenticated shortcode execution via unvalidated success message

Published May 12, 2026 · Updated May 12, 2026

Code injection in Advanced Custom Fields: Extended 0 through 0.9.2.3 allows remote attackers to execute arbitrary shortcodes. The Forms module passes its insufficiently validated success-message setting to do_shortcode, causing WordPress to expand attacker-controlled shortcode syntax. Unauthenticated access is sufficient when a front-end form uses the affected setting, and resulting effects depend on the shortcodes registered by the site.

CVSS severity6.5
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Code injection in Advanced Custom Fields: Extended 0 through 0.9.2.3 allows remote attackers to execute arbitrary shortcodes. The Forms module passes its insufficiently validated success-message setting to do_shortcode, causing WordPress to expand attacker-controlled shortcode syntax. Unauthenticated access is sufficient when a front-end form uses the affected setting, and resulting effects depend on the shortcodes registered by the site.

The record

CVE
CVE-2025-15463
Published
May 12, 2026
Updated
May 12, 2026
Vendor
Konrad Chmielewski
Product
Advanced Custom Fields: Extended
Classifications
CWE-94, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2026CVE publishedPublication date reported by the CVE source.
  2. May 12, 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 <=0.9.2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Konrad Chmielewski · Advanced Custom Fields: Extendedversion=0 <=0.9.2.3

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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.

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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 exploitPublished

Weakness, pattern, technique

CWE-94Improper Control of Generation of Code ('Code Injection')
T1190Exploit Public-Facing Application

Public exploit references

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Technologies

Your stack

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Your stack

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