CVE-2026-58494 (GCVE-0-2026-58494)

Vulnerability from cvelistv5 – Published: 2026-07-08 20:22 – Updated: 2026-07-09 13:28
VLAI
Title
Wasmtime: WASI hard links bypass wasmtime-wasi's FilePerms for destination
Summary
Wasmtime is a runtime for WebAssembly. Prior to 24.0.11, 36.0.12, 45.0.3, and 46.0.1, wasmtime-wasi hard-link creation and renaming check directory permissions but not matching FilePerms on source and destination preopens, allowing a WASI guest with a read-only source file capability to overwrite host files exposed as FilePerms::READ through wasip1, wasip2, or wasip3 filesystem interfaces. This issue is fixed in versions 24.0.11, 36.0.12, 45.0.3, and 46.0.1.
Severity
6.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 13:28 UTC
CWE
  • CWE-281 - Improper Preservation of Permissions
  • CWE-863 - Incorrect Authorization
Assigner
References
Impacted products
Vendor Product Version CPE status
bytecodealliance wasmtime Affected: < 24.0.11
Affected: >= 25.0.0, < 36.0.12
Affected: >= 37.0.0, < 45.0.3
Affected: >= 46.0.0, < 46.0.1
guessed Create a notification for this product.
Show details on NVD website
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}



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