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CVE-2026-55838

RustFS is a distributed object storage system built in Rust. In 1.0.0-beta.7 and earlier, the real-time metrics endpoint at /rustfs/admin/v3/metrics is accessible to any valid IAM user regardless of their assigned policy. Every other admin handler in the codebase calls validate_admin_request to enforce admin-action IAM checks; the MetricsHandler skips this call entirely. A restricted IAM user whose policy grants only access to their own bucket can read server-wide operational metrics including d
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:242325d6f81037e90cddb6e4f069dc7380b1d106d6d86d8dc29258d40cf1e463
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"rustfs","vendor":"rustfs","versions":[{"status":"affected","version":"<= 1.0.0-beta.7"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:851d2b87424451bd2179c2ce008161a494c878794e1a243d6528112c8d3329ef · sha256:eecdc96ae3cd5f78… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:851d2b87424451bd2179c2ce008161a494c878794e1a243d6528112c8d3329ef · sha256:eecdc96ae3cd5f78… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:851d2b87424451bd2179c2ce008161a494c878794e1a243d6528112c8d3329ef · sha256:eecdc96ae3cd5f78… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/rustfs/rustfs/security/advisories/GHSA-f5cv-v44x-2xgf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:851d2b87424451bd2179c2ce008161a494c878794e1a243d6528112c8d3329ef · sha256:eecdc96ae3cd5f78… · /containers/adp/0/references/0
{"name":"https://github.com/rustfs/rustfs/security/advisories/GHSA-f5cv-v44x-2xgf","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rustfs/rustfs/security/advisories/GHSA-f5cv-v44x-2xgf"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:851d2b87424451bd2179c2ce008161a494c878794e1a243d6528112c8d3329ef · sha256:eecdc96ae3cd5f78… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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