CVE-2026-45044 RustFS: Authentication bypass in /profile/cpu and /profile/memory allows unauthenticated access to profiling handlers
Unauthenticated attackers can access profiling endpoints to cause denial of service and leak filesystem paths in RustFS.
- 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-2026-45044?
CVE-2026-45044 is a high-severity authentication bypass vulnerability in rustfs, published on 28 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, the admin router explicitly whitelists /profile/cpu and /profile/memory from the authentication layer, allowing any unauthenticated HTTP client to invoke profiling handlers without credentials. On supported builds (e.g., glibc), the handler invokes a fixed 60-second CPU profiling operation (dump_cpu_pprof_for(Duration::from_secs(60))). This may result in significant CPU resource consumption per request and can potentially lead to denial of service when abused. Additionally, the handler returns the server’s absolute filesystem path in the response body, resulting in information disclosure. This vulnerability is fixed in 1.0.0-beta.2.
Weakness: CWE-306
Which versions are affected by CVE-2026-45044?
How do I fix CVE-2026-45044?
No fix has been published for CVE-2026-45044 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-45044 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45044 exists.
Sources
Also known as GHSA-8784-9m7f-c6p6.