CVE-2026-4215 FlowCI flow-core-x SMTP Host ConfigServiceImpl.java save server-side request forgery
Remote attackers can exploit an SSRF vulnerability in FlowCI's SMTP configuration handler to access internal resources or bypass security controls.
- 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-2026-4215?
CVE-2026-4215 is a medium-severity server-side request forgery vulnerability in FlowCI flow-core-x, published on 16 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A security flaw has been discovered in FlowCI flow-core-x up to 1.23.01. The impacted element is the function Save of the file core/src/main/java/com/flowci/core/config/service/ConfigServiceImpl.java of the component SMTP Host Handler. The manipulation results in server-side request forgery. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-918
Which versions are affected by CVE-2026-4215?
How do I fix CVE-2026-4215?
No fix has been published for CVE-2026-4215 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-2026-4215 being exploited?
There is no known exploitation of CVE-2026-4215 in the wild and no public exploit code.
Sources
Also known as GHSA-qwhx-37c9-3c7j.