CVE-2023-6290Public exploitNetwork attack vector

Administrator-level stored XSS via unescaped Separator setting

Published Jan 22, 2024 · Updated Aug 29, 2024

Stored XSS in SEOPress before 7.3 allows remote authenticated users with administrator privileges to inject scripts through the Separator setting. The seopress-titles administration page stores the Separator value without sanitization and later renders it on post-edit pages without escaping. Exposure is limited to multisite installations or sites with unfiltered_html disabled, and the script runs when a user opens an affected post-edit page.

CVSS severity4.8
Medium
EPSS probability0.40%
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 SEOPress before 7.3 allows remote authenticated users with administrator privileges to inject scripts through the Separator setting. The seopress-titles administration page stores the Separator value without sanitization and later renders it on post-edit pages without escaping. Exposure is limited to multisite installations or sites with unfiltered_html disabled, and the script runs when a user opens an affected post-edit page.

The record

CVE
CVE-2023-6290
Published
Jan 22, 2024
Updated
Aug 29, 2024
Vendor
SEOPress
Product
SEOPress
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Jan 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 29, 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 <7.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SEOPress · SEOPressversion=0 <7.3

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.4WordfenceCVSS: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 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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