CVE-2026-22043
CVSS v3
9.8
CRITICAL
EPSS Score
0.4 %
exploit probability, as of 2026-10-18
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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Affected and fixed versions
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Packages
- rustfscrates.iofrom 1.0.0-alpha.13 · fixed in 1.0.0-alpha.79
Description
RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.13 through 1.0.0-alpha.78, a flawed `deny_only` short-circuit in RustFS IAM allows a restricted service account or STS credential to self-issue an unrestricted service account, inheriting the parent’s full privileges. This enables privilege escalation and bypass of session/inline policy restrictions. Version 1.0.0-alpha.79 fixes the issue.
Technical details
- Published
- 2026-01-08
Frequently asked questions
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.