CVE-2026-15233Public exploitNetwork attack vector

Higher-privilege JavaScript execution via unescaped post titles

Published Aug 4, 2026 · Updated Aug 4, 2026

Stored XSS in Hook & Filter Nested Pages before 3.2.15 allows remote authenticated users to run JavaScript in an administrator session. The administrative page-tree listing inserts stored post titles into double-quoted row attributes without HTML attribute escaping, letting a crafted title close the attribute and add an event handler. The verified Editor path requires WordPress Multisite; Contributor or Author access also reaches the sink when the plugin is enabled for that post type, and execution requires a higher-privileged user to view or interact with the row.

CVSS severity4.8
Medium
EPSS probability0.14%
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 Hook & Filter Nested Pages before 3.2.15 allows remote authenticated users to run JavaScript in an administrator session. The administrative page-tree listing inserts stored post titles into double-quoted row attributes without HTML attribute escaping, letting a crafted title close the attribute and add an event handler. The verified Editor path requires WordPress Multisite; Contributor or Author access also reaches the sink when the plugin is enabled for that post type, and execution requires a higher-privileged user to view or interact with the row.

The record

CVE
CVE-2026-15233
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
Hook & Filter
Product
Nested Pages
Classifications
CWE-79, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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 <3.2.15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Hook & Filter · Nested Pagesversion=0 <3.2.15

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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')
T1203Exploitation for Client Execution

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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