Missing authorization in cleverplugins SEO Booster
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.
Summary
The SEO Booster plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 7.4.7. This is due to a missing capability check on the handle_oauth_callback() function which is hooked to admin_init and processes $_GET['access_token'] and $_GET['google_email'] without verifying the caller's role. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite the seobooster_access_token, seobooster_google_email, and seobooster_gsc_sites options and delete the seobooster_needs_reauth flag by visiting a crafted /wp-admin/ URL, disrupting the Google Search Console integration and injecting attacker-chosen data into site options via the attacker-supplied token that drives an outbound Google API request whose response is stored.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| cleverplugins | SEO Booster | up to 7.4.7 | — | No fix listed | CNA |
- SEO Booster Vendorcleverplugins Affected up to 7.4.7 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15660
- 2026-10-03 Alias added: GHSA-q642-cfr5-5536
References
Other 5
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3fd58af7-e8ef-4518-bed8-4e20c8e61db7?source=cve
- https://plugins.trac.wordpress.org/browser/seo-booster/tags/7.3.2/seo-booster.php#L546
- https://plugins.trac.wordpress.org/browser/seo-booster/tags/7.3.2/seo-booster.php#L243
- https://plugins.trac.wordpress.org/browser/seo-booster/tags/7.3.2/seo-booster.php#L547
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3665611%40seo-booster&new=3665611%40seo-booster
More cleverplugins vulnerabilities
- TI-2023-25864 WordPress Delete Duplicate Posts Plugin <= 4.8.9 is vulnerable to Broken Access Control CVSS 3.1CRITICAL 9.8
- TI-2024-21333 WordPress SEO Booster plugin <= 3.8.9 - Cross Site Request Forgery (CSRF) vulnerability CVSS 3.1HIGH 8.8
- TI-2025-41628 WordPress SEO Booster plugin <= 6.1.8 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5
- TI-2021-07029 SEO Booster < 3.8 - Admin+ SQL Injection CVSS 3.1HIGH 7.2
- TI-2022-04562 Freemius SDK <= 2.4.2 - Missing Authorization Checks CVSS 3.1MEDIUM 6.3
- TI-2024-12404 Freemius <= 2.10.1 - Reflected DOM-Based Cross-Site Scripting via url Parameter CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-15660 · CVE Program
- CVE-2026-15660 · NVD
- FIRST EPSS
- GHSA-q642-cfr5-5536 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences