{"id":"CVE-2026-54786","aliases":["RUSTSEC-2026-0182","GHSA-3p27-qvp9-27qf"],"title":"Leak in WASIp1 `fd_renumber` implementation","summary":"Leak in WASIp1 `fd_renumber` implementation","severity":"low","vendor":"wasmtime-wasi","product":"wasmtime-wasi","ecosystem":"rust","affected":["wasmtime-wasi >= 45.0.0, < 45.0.2"],"patched":["wasmtime-wasi 45.0.2"],"published":"2026-06-15","updated":"2026-10-12","sourceUpdated":"2026-10-12T18:00:08.333260838Z","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0182","references":[{"url":"https://crates.io/crates/wasmtime-wasi"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0182.html"},{"url":"https://github.com/bytecodealliance/wasmtime/pull/13650"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54786.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-54786"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2496195"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-54786"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54786"},{"url":"https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3p27-qvp9-27qf"}],"tags":["osv","rust","csaf","vex","red-hat"],"epss":0.00367,"epssPercentile":0.30402,"cwe":["CWE-772"],"ingestedAt":"2026-07-09T18:56:37.355Z","slug":"CVE-2026-54786","body":"## Overview\n\nThis is an entry in the RustSec database for the Wasmtime security advisory\nlocated at\nhttps://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-3p27-qvp9-27qf\nFor more information see the GitHub-hosted security advisory.\n\n## Affected packages\n\n- `wasmtime-wasi >= 45.0.0, < 45.0.2`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `wasmtime-wasi 45.0.2`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Connectivity Link 1, Red Hat Enterprise Linux 10 · no fix planned: Red Hat Connectivity Link 1, Red Hat Enterprise Linux 10 · updated 2026-10-02 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-54786.json)","depth":"sunlit","depthScore":14,"depthScoreParts":{"impact":13.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":214807,"id":"CVE-2026-54786","ts":1790927868086,"field":"severity","old":"none","new":"low"}]}