CVE-2026-9855Network attack vector

Authenticated database disclosure via unprepared post ID query

Published Sep 19, 2026 · Updated Sep 19, 2026

SQL injection in Custom Field Template 2.7.8 and earlier allows remote authenticated users to read database data via post_ID. The post-edit handler checks an integer-cast post ID for permission but sends the preserved, unescaped string to an unprepared SQL query. Contributor-level access and a valid post-edit nonce are required, and the demonstrated consequence is database confidentiality loss.

CVSS severity6.5
Medium
EPSS probability0.58%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in Custom Field Template 2.7.8 and earlier allows remote authenticated users to read database data via post_ID. The post-edit handler checks an integer-cast post ID for permission but sends the preserved, unescaped string to an unprepared SQL query. Contributor-level access and a valid post-edit nonce are required, and the demonstrated consequence is database confidentiality loss.

The record

CVE
CVE-2026-9855
Published
Sep 19, 2026
Updated
Sep 19, 2026
Vendor
Hiroaki Miyashita
Product
Custom Field Template
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 19, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 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 <=2.7.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Hiroaki Miyashita · Custom Field Templateversion=0 <=2.7.8

Published CVSS scores

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

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

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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