CVE-2026-111122 Cross-site scripting in SiteOrigin CSS
Unauthenticated attackers can inject scripts via comment anchors, leading to code execution or account takeover when administrators interact with the Visual Inspector.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-111122?
CVE-2026-111122 is a high-severity cross-site scripting vulnerability in gpriday SiteOrigin CSS, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The SiteOrigin CSS plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'href' parameter in all versions up to, and including, 1.6.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires the malicious comment to be approved and an administrator to subsequently open the Visual Inspector and click the attacker's anchor link, both of which are plausible interactions during routine comment triage.
Weakness: CWE-79
Which versions are affected by CVE-2026-111122?
How do I fix CVE-2026-111122?
No fix has been published for CVE-2026-111122 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-111122 being exploited?
There is no known exploitation of CVE-2026-111122 in the wild and no public exploit code.
Sources
Also known as GHSA-gq9v-x5r6-qvc7.