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CVE-2026-73290

RustFS: Anonymous ListObjectVersions bypasses RestrictPublicBuckets through the ListBucket fallback

Published: Aug 12, 2026Updated: Aug 12, 2026 Sources: CVE List NVDCWE-863
5.3MEDIUM
NVD MITRE
EPSS Score
0.2%
Top 84.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, an anonymous ListObjectVersions request in rustfs/src/storage/access.rs that lacks a direct bucket-policy grant falls back to an s3:ListBucket check and returns before the policy_allowed path applies deny_anonymous_table_data_plane_if_needed and RestrictPublicBuckets, so a bucket that permits anonymous listing can continue exposing version listings after an operator enables the public-access control. The bypass affects GET /<bucket>?versions= and can disclose object version metadata even though equivalent GetObject requests are denied. This issue is fixed in version 1.0.0-beta.12.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-863

Affected Products

rustfs
oss-project
rustfsLibrary
OSS Libraries / generic-library

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://github.com/rustfs/rustfs/commit/92f83bfe155d8a3b9cdd903086e5b28d52339efb
github.com
https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.12
github.com
https://github.com/rustfs/rustfs/security/advisories/GHSA-x298-9x87-fvjq
github.com

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