CVE-2026-54507 Vvveb oEmbedProxy vulnerable to server-side request forgery
An authenticated admin can exploit an SSRF vulnerability in the oEmbedProxy handler to access internal services and cloud metadata.
- 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-2026-54507?
CVE-2026-54507 is a high-severity server-side request forgery vulnerability in givanz Vvveb, published on 17 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.5, the oEmbedProxy() handler in admin/controller/editor/editor.php accepts an attacker-controlled url parameter and passes it to getUrl(), while validateUrl() in system/functions.php checks only the hostname string and does not validate its resolved addresses. An authenticated admin-panel user with editor/* permission can invoke GET /admin/index.php?module=editor/editor&action=oEmbedProxy with a dotted hostname or normalized loopback form that resolves to a private, loopback, link-local, or reserved address, causing the server to issue an HTTP or HTTPS request and return the response body. Storefront users and anonymous visitors cannot invoke the endpoint, but no CSRF token is required because the action uses GET. This can disclose internal service responses or cloud instance metadata and associated credentials. This issue is fixed in version 1.0.8.5.
Weakness: CWE-918
Which versions are affected by CVE-2026-54507?
How do I fix CVE-2026-54507?
No fix has been published for CVE-2026-54507 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-54507 being exploited?
There is no known exploitation of CVE-2026-54507 in the wild and no public exploit code.
Sources
Also known as GHSA-xxp7-59p2-4jr8.