CVE-2023-2578Public exploitNetwork attack vector

Stored XSS via unescaped customization settings

Published Jul 10, 2023 · Updated Nov 12, 2024

Stored XSS in Buy Me a Coffee – Button and Widget Plugin before 3.7 allows remote authenticated users to run script in administrators' browsers. The plugin stores unsanitized widget descriptions, widget messages, and button text, then renders the values without output escaping. Administrator-level access is required, and exploitation remains possible when unfiltered_html is disabled, including on WordPress multisite installations.

CVSS severity4.8
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Buy Me a Coffee – Button and Widget Plugin before 3.7 allows remote authenticated users to run script in administrators' browsers. The plugin stores unsanitized widget descriptions, widget messages, and button text, then renders the values without output escaping. Administrator-level access is required, and exploitation remains possible when unfiltered_html is disabled, including on WordPress multisite installations.

The record

CVE
CVE-2023-2578
Published
Jul 10, 2023
Updated
Nov 12, 2024
Vendor
Buy Me a Coffee
Product
Buy Me a Coffee – Button and Widget Plugin
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jul 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 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 <3.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Buy Me a Coffee · Buy Me a Coffee – Button and Widget Pluginversion=0 <3.7

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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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