EUVD-2026-57233Severity by source
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-accessible service but requires authenticated low-privilege access and a specific metadata-corruption precondition; integrity and availability both high due to permanent deletion of immutability-locked objects.
Primary rating from Vendor (GitHub_M).
CVSS VectorVendor: GitHub_M
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3DescriptionCVE.org
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-rc.1, RustFS Object Lock enforcement in crates/ecstore/src/bucket/object_lock/objectlock_sys.rs lets check_object_lock_for_deletion, delete_prefix, and lifecycle and scanner sweeps treat ConfigNotFound, unreadable .metadata.bin data, or unparseable metadata as no lock configuration, allowing objects under COMPLIANCE retention to be deleted or expired. This issue is fixed in version 1.0.0-rc.1.
AnalysisAI
Object Lock COMPLIANCE retention enforcement in RustFS fails open when bucket metadata is absent, unreadable, or corrupt - treating any metadata error as 'no lock configured' rather than blocking the operation. All RustFS versions prior to 1.0.0-rc.1 are affected, exposing COMPLIANCE-retained objects to unauthorized deletion via explicit delete calls, delete_prefix operations, and automated lifecycle or scanner sweeps. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Object Lock must be enabled on the affected bucket with COMPLIANCE retention mode or a lifecycle expiry policy configured. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H) scores 6.1 Medium, reflecting network accessibility tempered by high attack complexity and specific prerequisite conditions. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An authenticated low-privilege user deliberately corrupts or removes the .metadata.bin configuration file for a target bucket, then issues a delete request or waits for a scheduled lifecycle expiry sweep to execute. RustFS encounters the parse or I/O error, concludes that no lock configuration exists, and permanently deletes COMPLIANCE-locked objects that should have been immutable for their full retention period. … |
| Remediation | Upgrade RustFS to version 1.0.0-rc.1, which corrects the fail-open behavior in check_object_lock_for_deletion, delete_prefix, and lifecycle sweep routines to treat metadata read errors as a lock-present condition (fail closed) rather than lock-absent. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-693 – Protection Mechanism Failure
View allSame technique Information Disclosure
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External POC / Exploit Code
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