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CVE-2026-55189

RustFS is a distributed object storage system built in Rust. From 1.0.0-alpha.1 until 1.0.0-beta.9, when the FTP frontend is enabled, the FTP read and probe handlers dispatch directly to the storage backend without ever calling the IAM authorization function that the FTP write/list handlers (and the entire HTTP S3 path) use. As a result, any user who can authenticate to the FTP listener — including a user whose IAM policy contains an explicit Deny on s3:GetObject — can read (RETR) and stat (SIZE
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:58011aef12012c428e2722e69277a7376265820e8e36647a84cd870507c61ffb
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"rustfs","vendor":"rustfs","versions":[{"status":"affected","version":">= 1.0.0-alpha.1, <= 1.0.0-beta.8"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-863","description":"CWE-863: Incorrect Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-862","description":"CWE-862: Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/rustfs/rustfs/security/advisories/GHSA-3g29-xff2-92vp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /containers/adp/0/references/0
{"name":"https://github.com/rustfs/rustfs/security/advisories/GHSA-3g29-xff2-92vp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rustfs/rustfs/security/advisories/GHSA-3g29-xff2-92vp"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:9b1387435312605a187e5c741cfe5950863d52ab8152d4649674a0bdf9fa206f · sha256:1c0aedef8f0982f2… · /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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