CVE-2026-73286highCWE-863

CVE-2026-73286: high-severity vulnerability in rustfs

RustF: Request headers can populate server-derived IAM condition keys, letting a caller satisfy identity-based policy conditions

Published

Follow this CVE+ Monitor rustfs

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.1epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Affected products
rustfs · rustfs
Related CVEs — rustfs

In the same product, most dangerous first.

CVE-2025-68926CRITICALRustFS has a gRPC Hardcoded Token Authentication BypassEPSS 31.9%CVE-2025-68705HIGHRustFS Path Traversal VulnerabilityEPSS 7.3%CVE-2026-27822CRITICALRust has Critical Stored XSS in Preview Modal, leading to Administrative Account TakeoverEPSS 5.1%CVE-2026-22782LOWRustFS RPC signature verification logs shared secretEPSS 0.5%CVE-2026-73284HIGHRustFS: AddServiceAccount Handler Allows Creation of Root-Parent Service AccountsEPSS 0.5%CVE-2026-73285HIGHRustFS: OPA policy plugin omits ExistingObjectTag conditions, allowing tag-based authorization policies to treat tagged objects as untaggedEPSS 0.5%