CVE-2023-51526Network attack vector

Staff data disclosure via missing capability checks

Published Jun 12, 2024 · Updated Apr 28, 2026

Missing authorization in Simple Staff List 2.2.4 and earlier allows remote authenticated users to export staff data and flush rewrite rules. The ajax_flush_rewrite_rules and staff_member_export functions omit capability checks before performing their administrative actions. Subscriber-level access is sufficient; the resulting exposure is limited to staff-list disclosure and rewrite-rule modification.

CVSS severity4.3
Medium
EPSS probability0.32%
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 Simple Staff List 2.2.4 and earlier allows remote authenticated users to export staff data and flush rewrite rules. The ajax_flush_rewrite_rules and staff_member_export functions omit capability checks before performing their administrative actions. Subscriber-level access is sufficient; the resulting exposure is limited to staff-list disclosure and rewrite-rule modification.

The record

CVE
CVE-2023-51526
Published
Jun 12, 2024
Updated
Apr 28, 2026
Vendor
Brett Shumaker
Product
Simple Staff List
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 28, 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=n/a <=2.2.4 changes=[{"at":"2.2.5","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Brett Shumaker · Simple Staff Listversion=n/a <=2.2.4 changes=[{"at":"2.2.5","status":"unaffected"}]

Published CVSS scores

4.3PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
5.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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.

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization

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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