CVE-2026-73286
RustF: Request headers can populate server-derived IAM condition keys, letting a caller satisfy identity-based policy conditions
- State
- Published
- Severity
- 8.1 High
- Published
- Aug 12, 2026
- Updated
- Aug 12, 2026
- Reserved
- Aug 11, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | GitHub_M |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
rustfsrustfs |
|
References
- https://github.com/rustfs/rustfs/security/advisories/GHSA-6r96-hmgc-726c
- https://github.com/rustfs/rustfs/commit/92f83bfe155d8a3b9cdd903086e5b28d52339efb
- https://github.com/rustfs/rustfs/blob/380ed40b471887014fe21d069b61df9eacca074b/.agents/skills/security-advisory-lessons/references/advisory-patterns.md?plain=1#L45
- https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.12
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