CVE-2023-0831Network attack vector

Notice dismissal via missing CSRF nonce validation

Published Jun 9, 2023 · Updated Apr 8, 2026

Cross-site request forgery in Under Construction 3.96 and earlier allows remote attackers to dismiss plugin notices through an administrator's browser. The dismiss_notice callback processes admin_action_ucp_dismiss_notice requests without validating a WordPress nonce before marking the notice dismissed. An administrator must be logged in and induced to follow a crafted request; successful exploitation only suppresses plugin notifications.

CVSS severity4.3
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site request forgery in Under Construction 3.96 and earlier allows remote attackers to dismiss plugin notices through an administrator's browser. The dismiss_notice callback processes admin_action_ucp_dismiss_notice requests without validating a WordPress nonce before marking the notice dismissed. An administrator must be logged in and induced to follow a crafted request; successful exploitation only suppresses plugin notifications.

The record

CVE
CVE-2023-0831
Published
Jun 9, 2023
Updated
Apr 8, 2026
Vendor
WebFactory Ltd
Product
Under Construction
Classifications
CWE-352, CAPEC-62, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=3.96

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

WebFactory Ltd · Under Constructionversion=0 <=3.96

Published CVSS scores

4.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CAPEC-62Cross Site Request Forgery
T1204.001Malicious Link

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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