High severity · published Aug 12, 2026
CVE-2026-73284
RustFS: AddServiceAccount Handler Allows Creation of Root-Parent Service Accounts
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
RustFS is a distributed object storage system built in Rust. RustFS AddServiceAccount in rustfs/src/admin/handlers/service_account.rs accepts an attacker-controlled target_user after only checking CreateServiceAccountAdminAction, passes it to new_service_account, and prepare_service_account_auth sets is_owner for the resulting root-parent service account. This issue is fixed in version 1.0.0-beta.11.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RU
rustfs · rustfs
< 1.0.0-beta.11 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-73284
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-73284
github.com
https://github.com/rustfs/rustfs/commit/9866f68d86482b3de7e0058a908727c3815e72b9
github.com
https://github.com/rustfs/rustfs/pull/5141
github.com
https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.11
github.com
https://github.com/rustfs/rustfs/security/advisories/GHSA-5354-r3w2-34m8
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