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Vulnerabilities

Vulnerability · CVE-2025-4611

The Slim SEO – Fast & Automated WordPress SEO Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's slim_seo_breadcrumbs shortcode in all versio

Published May 21, 2025 · catalog updated Apr 8, 2026 · Rilwis Slim SEO – A Fast & Automated SEO Plugin For WordPress

Check if you run it

No confirmed exploitation is on record for CVE-2025-4611. EPSS is 0.53%. Act only if a listed version of Rilwis Slim SEO – A Fast & Automated SEO Plugin For WordPress is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.4
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.53%
Remediation
Vendor / distro source
Affected products
vendor Rilwis Slim SEO – A Fast & Automated SEO Plugin For WordPress 0 ≤4.5.3

The Slim SEO – Fast & Automated WordPress SEO Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's slim_seo_breadcrumbs shortcode in all versions up to, and including, 4.5.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Rilwis Slim SEO – A Fast & Automated SEO Plugin For WordPress 0 ≤4.5.30 ≤4.5.3

How to fix CVE-2025-4611

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-4611. EPSS is 0.53%. Act only if a listed version of Rilwis Slim SEO – A Fast & Automated SEO Plugin For WordPress is installed.

Which versions are affected?

Compare what you have installed with Rilwis Slim SEO – A Fast & Automated SEO Plugin For WordPress 0 ≤4.5.3 0 ≤4.5.3. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.53%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 21, 2025 · EUVD

    Detected

    The Slim SEO – Fast & Automated WordPress SEO Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's slim_seo_breadcrumbs shortcode in all versions up to, and including, 4.5.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to injec

  2. Apr 8, 2026 · EUVD

    Updated

    The Slim SEO – Fast & Automated WordPress SEO Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's slim_seo_breadcrumbs shortcode in all versions up to, and including, 4.5.3 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to injec

Sources

  • CVE.orgVulnerability recordCVE-2025-4611

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4611

    30-day exploitation probability 0.5%

    first.org
  • EUVDVulnerability recordEUVD-2025-16074

    The Slim SEO – Fast & Automated WordPress SEO Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's slim_seo_breadcrumbs shortcode in all versions up to, and including, 4.5.3 due to insufficient input sanitization and output escaping on user su

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.