CVE-2026-22042

HIGHNVD 8.88.8—Elevated

8.8

RustFS is a distributed object storage system built in Rust. Prior to version 1.0.0-alpha.79, he ImportIam admin API validates permissions using ExportIAMAction instead of ImportIAMAction, allowing a principal with export-only IAM permissions to perform import operations. Since importing IAM data performs privileged write actions (creating/updating users, groups, policies, and service accounts), this can lead to unauthorized IAM modification and privilege escalation. Version 1.0.0-alpha.79 fixes the issue.

CVSS v3: 8.8
EG Score: 8.8(medium)
EPSS: 6.3%
KEV: Not listed

Published

January 8, 2026

Last Modified

January 15, 2026

References (2)

security-advisories@githubhttps://github.com/rustfs/rustfs/security/advisories/GHSA-vcwh-pff9-64cc
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/rustfs/rustfs/security/advisories/GHSA-vcwh-pff9-64cc

Affected Packages

(1 across 1 ecosystem)

crates.io(1)

Package	Vulnerable range	Fixed in	Dependents
rustfs	—	1.0.0-alpha.79	—

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 13× in last 7d / 13× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:13 UTCepss_batch
2026-06-02 20:13 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-06-01 13:51 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 16:28 UTCEG score recompute
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch

Frequently asked(5)

What is CVE-2026-22042?

CVE-2026-22042 is a high vulnerability published on January 8, 2026. RustFS is a distributed object storage system built in Rust. Prior to version 1.0.0-alpha.79, he ImportIam admin API validates permissions using ExportIAMAction instead of ImportIAMAction, allowing a principal with export-only IAM permissions to perform import operations. Since importing IAM data…

When was CVE-2026-22042 disclosed?

CVE-2026-22042 was first published in the National Vulnerability Database on January 8, 2026, with the most recent update on January 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-22042 actively exploited?

CVE-2026-22042 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-22042?

CVE-2026-22042 has a CVSS v3 base score of 8.8 (NVD).

How do I remediate CVE-2026-22042?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-22042, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-22042

📅 Published

🔄 Last Modified

🔗 References (2)

Affected Packages

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-22042?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)