CVE-2026-110223 Kavita 0.9.0 through 0.9.1.4 SSRF Blocklist Bypass via upload-cbl-file Endpoint
Authenticated attackers can bypass SSRF blocklists in Kavita to probe internal services via DNS rebinding or redirects.
- 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-2026-110223?
CVE-2026-110223 is a low-severity server-side request forgery vulnerability in Kareadita Kavita, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Kavita 0.9.0 through 0.9.1.4 contains a server-side request forgery vulnerability that allows authenticated users to bypass the SSRF blocklist through DNS rebinding or HTTPS redirects. Attackers can submit a URL to POST /api/Cbl/upload-cbl-file whose host rebinds or redirects to internal addresses after validation, enabling blind internal port and service probing.
Weakness: CWE-918
Which versions are affected by CVE-2026-110223?
How do I fix CVE-2026-110223?
No fix has been published for CVE-2026-110223 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-2026-110223 being exploited?
There is no known exploitation of CVE-2026-110223 in the wild and no public exploit code.
Sources
Also known as GHSA-r6xw-vr9q-6g8x.