RustFS missing admin authorization on notification target endpoints, which allows unauthenticated configuration of event webhooks

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-40937
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-22 21:17:08 UTC
Updated2026-04-24 13:12:29 UTC
DescriptionRustFS is a distributed object storage system built in Rust. Prior to 1.0.0-alpha.94, all four notification target admin API endpoints in `rustfs/src/admin/handlers/event.rs` use a `check_permissions` helper that validates authentication only (access key + session token), without performing any admin-action authorization via `validate_admin_request`. Every other admin handler in the codebase correctly calls `validate_admin_request` with a specific `AdminAction`. This is the only admin handler file that skips authorization. A non-admin user can overwrite a shared admin-defined notification target by name, causing subsequent bucket events to be delivered to an attacker-controlled endpoint. This enables cross-user event interception and audit evasion. 1.0.0-alpha.94 contains a patch.

Risk And Classification

Primary CVSS: v3.1 8.3 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

EPSS: 0.000550000 probability, percentile 0.172420000 (date 2026-04-26)

Problem Types: CWE-862 | CWE-862 CWE-862: Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.3HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
3.1CNADECLARED8.3HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Rustfs Rustfs 1.0.0 alpha1 All All
Application Rustfs Rustfs 1.0.0 alpha10 All All
Application Rustfs Rustfs 1.0.0 alpha11 All All
Application Rustfs Rustfs 1.0.0 alpha12 All All
Application Rustfs Rustfs 1.0.0 alpha13 All All
Application Rustfs Rustfs 1.0.0 alpha14 All All
Application Rustfs Rustfs 1.0.0 alpha15 All All
Application Rustfs Rustfs 1.0.0 alpha16 All All
Application Rustfs Rustfs 1.0.0 alpha17 All All
Application Rustfs Rustfs 1.0.0 alpha18 All All
Application Rustfs Rustfs 1.0.0 alpha19 All All
Application Rustfs Rustfs 1.0.0 alpha2 All All
Application Rustfs Rustfs 1.0.0 alpha20 All All
Application Rustfs Rustfs 1.0.0 alpha21 All All
Application Rustfs Rustfs 1.0.0 alpha22 All All
Application Rustfs Rustfs 1.0.0 alpha23 All All
Application Rustfs Rustfs 1.0.0 alpha24 All All
Application Rustfs Rustfs 1.0.0 alpha25 All All
Application Rustfs Rustfs 1.0.0 alpha26 All All
Application Rustfs Rustfs 1.0.0 alpha27 All All
Application Rustfs Rustfs 1.0.0 alpha28 All All
Application Rustfs Rustfs 1.0.0 alpha29 All All
Application Rustfs Rustfs 1.0.0 alpha3 All All
Application Rustfs Rustfs 1.0.0 alpha30 All All
Application Rustfs Rustfs 1.0.0 alpha31 All All
Application Rustfs Rustfs 1.0.0 alpha32 All All
Application Rustfs Rustfs 1.0.0 alpha33 All All
Application Rustfs Rustfs 1.0.0 alpha34 All All
Application Rustfs Rustfs 1.0.0 alpha35 All All
Application Rustfs Rustfs 1.0.0 alpha36 All All
Application Rustfs Rustfs 1.0.0 alpha37 All All
Application Rustfs Rustfs 1.0.0 alpha38 All All
Application Rustfs Rustfs 1.0.0 alpha39 All All
Application Rustfs Rustfs 1.0.0 alpha4 All All
Application Rustfs Rustfs 1.0.0 alpha40 All All
Application Rustfs Rustfs 1.0.0 alpha41 All All
Application Rustfs Rustfs 1.0.0 alpha42 All All
Application Rustfs Rustfs 1.0.0 alpha43 All All
Application Rustfs Rustfs 1.0.0 alpha44 All All
Application Rustfs Rustfs 1.0.0 alpha45 All All
Application Rustfs Rustfs 1.0.0 alpha46 All All
Application Rustfs Rustfs 1.0.0 alpha47 All All
Application Rustfs Rustfs 1.0.0 alpha48 All All
Application Rustfs Rustfs 1.0.0 alpha49 All All
Application Rustfs Rustfs 1.0.0 alpha5 All All
Application Rustfs Rustfs 1.0.0 alpha50 All All
Application Rustfs Rustfs 1.0.0 alpha51 All All
Application Rustfs Rustfs 1.0.0 alpha52 All All
Application Rustfs Rustfs 1.0.0 alpha53 All All
Application Rustfs Rustfs 1.0.0 alpha54 All All
Application Rustfs Rustfs 1.0.0 alpha55 All All
Application Rustfs Rustfs 1.0.0 alpha56 All All
Application Rustfs Rustfs 1.0.0 alpha57 All All
Application Rustfs Rustfs 1.0.0 alpha58 All All
Application Rustfs Rustfs 1.0.0 alpha59 All All
Application Rustfs Rustfs 1.0.0 alpha6 All All
Application Rustfs Rustfs 1.0.0 alpha60 All All
Application Rustfs Rustfs 1.0.0 alpha61 All All
Application Rustfs Rustfs 1.0.0 alpha62 All All
Application Rustfs Rustfs 1.0.0 alpha63 All All
Application Rustfs Rustfs 1.0.0 alpha64 All All
Application Rustfs Rustfs 1.0.0 alpha65 All All
Application Rustfs Rustfs 1.0.0 alpha66 All All
Application Rustfs Rustfs 1.0.0 alpha67 All All
Application Rustfs Rustfs 1.0.0 alpha68 All All
Application Rustfs Rustfs 1.0.0 alpha69 All All
Application Rustfs Rustfs 1.0.0 alpha7 All All
Application Rustfs Rustfs 1.0.0 alpha70 All All
Application Rustfs Rustfs 1.0.0 alpha71 All All
Application Rustfs Rustfs 1.0.0 alpha72 All All
Application Rustfs Rustfs 1.0.0 alpha73 All All
Application Rustfs Rustfs 1.0.0 alpha74 All All
Application Rustfs Rustfs 1.0.0 alpha75 All All
Application Rustfs Rustfs 1.0.0 alpha76 All All
Application Rustfs Rustfs 1.0.0 alpha77 All All
Application Rustfs Rustfs 1.0.0 alpha78 All All
Application Rustfs Rustfs 1.0.0 alpha79 All All
Application Rustfs Rustfs 1.0.0 alpha8 All All
Application Rustfs Rustfs 1.0.0 alpha80 All All
Application Rustfs Rustfs 1.0.0 alpha81 All All
Application Rustfs Rustfs 1.0.0 alpha82 All All
Application Rustfs Rustfs 1.0.0 alpha83 All All
Application Rustfs Rustfs 1.0.0 alpha84 All All
Application Rustfs Rustfs 1.0.0 alpha85 All All
Application Rustfs Rustfs 1.0.0 alpha86 All All
Application Rustfs Rustfs 1.0.0 alpha87 All All
Application Rustfs Rustfs 1.0.0 alpha88 All All
Application Rustfs Rustfs 1.0.0 alpha89 All All
Application Rustfs Rustfs 1.0.0 alpha9 All All
Application Rustfs Rustfs 1.0.0 alpha90 All All
Application Rustfs Rustfs 1.0.0 alpha91 All All
Application Rustfs Rustfs 1.0.0 alpha92 All All
Application Rustfs Rustfs 1.0.0 alpha93 All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Rustfs Rustfs affected < 1.0.0-alpha.94 Not specified

References

ReferenceSourceLinkTags
github.com/rustfs/rustfs/releases/tag/1.0.0-alpha.94 [email protected] github.com Product, Release Notes
github.com/rustfs/rustfs/security/advisories/GHSA-pfcq-4gjr-6gjm [email protected] github.com Mitigation, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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