CVE-2024-4655Network attack vector

Contributor-level stored XSS via unescaped block options

Published Jul 11, 2024 · Updated Aug 1, 2024

Stored cross-site scripting in Ultimate Blocks before 3.1.9 allows remote authenticated users to inject script through block options. The plugin outputs some block option values in embedded pages or posts without validating or escaping them; public records do not identify the affected option names or code locus. Contributor-level access or higher is required, and the injected script executes when a visitor loads the affected content.

CVSS severityUnavailable
Unscored
EPSS probability0.45%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Ultimate Blocks before 3.1.9 allows remote authenticated users to inject script through block options. The plugin outputs some block option values in embedded pages or posts without validating or escaping them; public records do not identify the affected option names or code locus. Contributor-level access or higher is required, and the injected script executes when a visitor loads the affected content.

The record

CVE
CVE-2024-4655
Published
Jul 11, 2024
Updated
Aug 1, 2024
Vendor
WP Table Builder
Product
Ultimate Blocks
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 11, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record 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 <3.1.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WP Table Builder · Ultimate Blocksversion=0 <3.1.9
Ultimate Blocks · Ultimate Blocksversion=0 <3.1.9

Published CVSS scores

No CVSS assessment is available in this record.

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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