CVE-2026-73265Network attack vector

Historical object disclosure via wrong IAM action

Published Aug 12, 2026 · Updated Aug 12, 2026

Incorrect authorization in RustFS before 1.0.0-beta.11 allows remote authenticated users to read known historical object content. The access layer authorizes explicit versionId reads in GetObject, CopyObject sources, and UploadPartCopy sources as s3:GetObject rather than s3:GetObjectVersion. Exploitation requires a known version identifier and a principal allowed to read the current object but not historical versions; the confirmed consequence is historical-content disclosure.

CVSS severity6.5
Medium
EPSS probability0.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in RustFS before 1.0.0-beta.11 allows remote authenticated users to read known historical object content. The access layer authorizes explicit versionId reads in GetObject, CopyObject sources, and UploadPartCopy sources as s3:GetObject rather than s3:GetObjectVersion. Exploitation requires a known version identifier and a principal allowed to read the current object but not historical versions; the confirmed consequence is historical-content disclosure.

The record

CVE
CVE-2026-73265
Published
Aug 12, 2026
Updated
Aug 12, 2026
Vendor
RustFS
Product
RustFS
Classifications
CWE-863, CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.0.0-beta.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RustFS · RustFSversion=< 1.0.0-beta.11

Published CVSS scores

6.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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