CVE-2026-15660 Missing authorization in SEO Booster
Authenticated subscribers can modify Google Search Console integration options and inject attacker-controlled data due to missing capability checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15660?
CVE-2026-15660 is a medium-severity missing authorization vulnerability in cleverplugins SEO Booster, published on 19 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-862
Which versions are affected by CVE-2026-15660?
How do I fix CVE-2026-15660?
No fix has been published for CVE-2026-15660 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-15660 being exploited?
There is no known exploitation of CVE-2026-15660 in the wild and no public exploit code.
Sources
Also known as GHSA-q642-cfr5-5536.