CVE-2026-73286 Auth bypass in rustfs
Authenticated attackers can manipulate request headers to spoof identity-based policy conditions, bypassing access controls in RustFS.
- 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-2026-73286?
CVE-2026-73286 is a high-severity authentication bypass vulnerability in rustfs, published on 12 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, RustFS get_condition_values folds attacker-controlled request headers from HeaderMap into server-derived userid, username, principaltype, groups, versionid, signatureversion, jwt:, and ldap: condition keys, allowing authenticated callers to satisfy identity-based policy conditions. This issue is fixed in version 1.0.0-beta.12.
Weakness: CWE-863
Which versions are affected by CVE-2026-73286?
How do I fix CVE-2026-73286?
No fix has been published for CVE-2026-73286 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-2026-73286 being exploited?
There is no known exploitation of CVE-2026-73286 in the wild and no public exploit code.
Sources
Also known as GHSA-6r96-hmgc-726c.