RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 through 1.0.0-alpha.78, a flawed `deny_only` short-circuit in RustFS IAM allows a restricted service account or STS credential to self-issue an unrestricted service account, inheriting the parent’s full privileges. This enables privilege escalation and bypass of session/inline policy restrictions. Version 1.0.0-alpha.79 fixes the issue.
History

Thu, 15 Jan 2026 21:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-522
CPEs cpe:2.3:a:rustfs:rustfs:1.0.0:alpha13:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha14:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha15:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha16:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha17:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha18:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha19:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha20:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha21:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha22:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha23:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha24:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha25:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha26:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha27:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha28:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha29:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha30:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha31:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha32:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha33:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha34:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha35:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha36:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha37:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha38:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha39:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha40:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha41:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha42:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha43:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha44:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha45:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha46:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha47:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha48:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha49:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha50:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha51:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha52:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha53:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha54:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha55:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha56:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha57:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha58:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha59:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha60:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha61:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha62:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha63:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha64:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha65:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha66:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha67:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha68:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha69:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha70:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha71:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha72:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha73:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha74:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha75:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha76:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha77:*:*:*:rust:*:*
cpe:2.3:a:rustfs:rustfs:1.0.0:alpha78:*:*:*:rust:*:*
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}


Fri, 09 Jan 2026 13:30:00 +0000

Type Values Removed Values Added
First Time appeared Rustfs
Rustfs rustfs
Vendors & Products Rustfs
Rustfs rustfs

Thu, 08 Jan 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 08 Jan 2026 15:15:00 +0000

Type Values Removed Values Added
Description RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 through 1.0.0-alpha.78, a flawed `deny_only` short-circuit in RustFS IAM allows a restricted service account or STS credential to self-issue an unrestricted service account, inheriting the parent’s full privileges. This enables privilege escalation and bypass of session/inline policy restrictions. Version 1.0.0-alpha.79 fixes the issue.
Title RustFS has IAM deny_only Short-Circuit that Allows Privilege Escalation via Service Account Minting
Weaknesses CWE-269
CWE-284
References
Metrics cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-01-08T15:03:59.313Z

Updated: 2026-01-08T15:54:47.243Z

Reserved: 2026-01-05T22:30:38.720Z

Link: CVE-2026-22043

cve-icon Vulnrichment

Updated: 2026-01-08T15:50:42.079Z

cve-icon NVD

Status : Analyzed

Published: 2026-01-08T15:15:45.583

Modified: 2026-01-15T21:13:08.733

Link: CVE-2026-22043

cve-icon Redhat

No data.