CVE-2023-47760Network attack vector

Subscriber-level AJAX invocation via leaked nonces

Published Dec 9, 2024 · Updated Apr 29, 2026

Missing authorization in Essential Blocks for Gutenberg 4.2.0 and earlier allows remote authenticated users to invoke AJAX functions. Several AJAX handlers verify a nonce but omit capability checks, while the required nonce is exposed on the WordPress profile page. Subscriber-level access is sufficient; public sources do not specify the exact state changes available through the affected functions.

CVSS severity4.3
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Essential Blocks for Gutenberg 4.2.0 and earlier allows remote authenticated users to invoke AJAX functions. Several AJAX handlers verify a nonce but omit capability checks, while the required nonce is exposed on the WordPress profile page. Subscriber-level access is sufficient; public sources do not specify the exact state changes available through the affected functions.

The record

CVE
CVE-2023-47760
Published
Dec 9, 2024
Updated
Apr 29, 2026
Vendor
ReviewX Team
Product
Essential Blocks for Gutenberg
Classifications
CWE-862, CAPEC-180, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 29, 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 <=4.2.0 changes=[{"at":"4.2.1","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ReviewX Team · Essential Blocks for Gutenbergversion=0 <=4.2.0 changes=[{"at":"4.2.1","status":"unaffected"}]

Published CVSS scores

8.8NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.3PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/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-862Missing Authorization
CAPEC-180Exploiting Incorrectly Configured Access Control Security Levels
T1190Exploit Public-Facing Application

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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