CVE-2023-23686Network attack vector

Contributor-level script execution in visitor browsers

Published Apr 4, 2023 · Updated Apr 28, 2026

Stored cross-site scripting in Brett Shumaker Simple Staff List 2.2.2 and earlier allows remote authenticated users to run script in visitors' browsers. The CNA does not identify the affected staff field or rendering function; the upstream changelog states only that version 2.2.3 added additional escaping. Contributor-level access and a later visit to the stored content are required, bounding the consequence to script execution in the visitor's WordPress origin.

CVSS severity5.4
Medium
EPSS probability0.39%
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 Brett Shumaker Simple Staff List 2.2.2 and earlier allows remote authenticated users to run script in visitors' browsers. The CNA does not identify the affected staff field or rendering function; the upstream changelog states only that version 2.2.3 added additional escaping. Contributor-level access and a later visit to the stored content are required, bounding the consequence to script execution in the visitor's WordPress origin.

The record

CVE
CVE-2023-23686
Published
Apr 4, 2023
Updated
Apr 28, 2026
Vendor
Brett Shumaker
Product
Simple Staff List
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 4, 2023CVE 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 <=2.2.2 changes=[{"at":"2.2.3","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Brett Shumaker · Simple Staff Listversion=n/a <=2.2.2 changes=[{"at":"2.2.3","status":"unaffected"}]

Published CVSS scores

6.5PatchstackCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
5.4NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-592Stored XSS
T1059.007JavaScript

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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