CVE-2026-34428 Vvveb < 1.0.8.1 SSRF via oEmbedProxy
Authenticated users can exploit SSRF in Vvveb to read arbitrary files or probe internal networks via the oEmbedProxy action.
- 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-2026-34428?
CVE-2026-34428 is a high-severity server-side request forgery vulnerability in givanz Vvveb, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Vvveb prior to 1.0.8.1 contains a server-side request forgery vulnerability in the oEmbedProxy action of the editor/editor module where the url parameter is passed directly to getUrl() via curl without scheme or destination validation. Authenticated backend users can supply file:// URLs to read arbitrary files readable by the web server process or http:// URLs targeting internal network addresses to probe internal services, with response bodies returned directly to the caller.
Weakness: CWE-918
Which versions are affected by CVE-2026-34428?
How do I fix CVE-2026-34428?
No fix has been published for CVE-2026-34428 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-2026-34428 being exploited?
There is no known exploitation of CVE-2026-34428 in the wild and no public exploit code.
Sources
Also known as GHSA-fr6h-4rh3-wc9f.