CVE-2023-2225Public exploitNetwork attack vector

Administrator-level stored XSS via unescaped Slack Channel setting

Published Aug 16, 2023 · Updated Oct 8, 2024

Stored XSS in SEO ALert through 1.59 allows remote authenticated users to inject scripts through the Slack Channel setting. The plugin saves the setting without sanitizing it and renders the stored value without escaping, so an event-handler payload executes when the setting is saved or later viewed. Administrator privileges and a multisite installation or disabled unfiltered_html capability are required; injected scripts run in the browser of a user who opens the affected page.

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 SEO ALert through 1.59 allows remote authenticated users to inject scripts through the Slack Channel setting. The plugin saves the setting without sanitizing it and renders the stored value without escaping, so an event-handler payload executes when the setting is saved or later viewed. Administrator privileges and a multisite installation or disabled unfiltered_html capability are required; injected scripts run in the browser of a user who opens the affected page.

The record

CVE
CVE-2023-2225
Published
Aug 16, 2023
Updated
Oct 8, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.4Wordfence IntelligenceCVSS:3.1/AV:N/AC:H/PR:H/UI:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

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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