CVE-2026-2305Network attack vector

Contributor-level stored XSS via unprotected post metadata

Published Apr 10, 2026 · Updated Apr 10, 2026

Stored XSS in AddFunc Head & Footer Code 2.3 and earlier allows remote authenticated users to execute scripts through post custom fields. The plugin emits aFhfc_head_code, aFhfc_body_code, and aFhfc_footer_code metadata without escaping and leaves the keys unprotected by a register_meta authorization callback. Contributor-level access is sufficient to plant code that runs in an administrator's browser when the affected post is previewed or viewed.

CVSS severity6.4
Medium
EPSS probability0.20%
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 AddFunc Head & Footer Code 2.3 and earlier allows remote authenticated users to execute scripts through post custom fields. The plugin emits aFhfc_head_code, aFhfc_body_code, and aFhfc_footer_code metadata without escaping and leaves the keys unprotected by a register_meta authorization callback. Contributor-level access is sufficient to plant code that runs in an administrator's browser when the affected post is previewed or viewed.

The record

CVE
CVE-2026-2305
Published
Apr 10, 2026
Updated
Apr 10, 2026
Vendor
AddFunc
Product
AddFunc Head & Footer Code
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 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 <=2.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

AddFunc · AddFunc Head & Footer Codeversion=0 <=2.3

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/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')
T1059.007JavaScript/JScript

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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