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CVE-2026-46685

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, when RUSTFS_CORS_ALLOWED_ORIGINS is unset, the RustFS S3 listener's ConditionalCorsLayer reflects any request Origin value back as Access-Control-Allow-Origin and also sets Access-Control-Allow-Credentials: true and Access-Control-Allow-Headers: * on responses, including preflight responses and error responses. This creates a permissive cross-domain policy with untrusted origins. A browser visiting an attacker-co
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:673d54b3bfe2092e02fbdff279e4bc9b1463807ade2f7392530f93d857121b48
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-942","description":"CWE-942: Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/problemTypes/2/descriptions/0

Affected products and versions

1 source assertion
{"product":"rustfs","vendor":"rustfs","versions":[{"status":"affected","version":"< 1.0.0-beta.2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

3 source assertions
{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-306","description":"CWE-306: Missing Authentication for Critical Function","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-942","description":"CWE-942: Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/cna/problemTypes/2/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/rustfs/rustfs/security/advisories/GHSA-x5xv-223c-8vm7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /containers/adp/0/references/0
{"name":"https://github.com/rustfs/rustfs/security/advisories/GHSA-x5xv-223c-8vm7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/rustfs/rustfs/security/advisories/GHSA-x5xv-223c-8vm7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:d2957d886628e77bc93e87dd3d604a5602772640c35232f5a1982f027f441667 · sha256:74692b0446f891bc… · /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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