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Findings

RUSTSEC-2026-0363

Component-model handle tables are capped only per instance and charged to no limit

Published Oct 14, 2026 · corrected/updated Oct 14, 2026 · evidence confidence medium

This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q554-3cjc-rx7p For more information see the GitHub-hosted security advisory.

Grounded briefings

Catalog interpretations for three audiences. Each brief cites ingested metadata and the original advisories below. They are not independent research and they do not invent exploit steps.

Executive

RUSTSEC-2026-0363 is a medium public vulnerability record for this product. It is not currently listed in the CISA Known Exploited catalog. Check the linked vendor or CERT advisories for patch status. This summary is a catalog interpretation of the ingested metadata and cites the original advisories below.

System administrator

Identify whether this product is in your estate, then compare installed versions with the affected ranges. Affected packages or ranges on record: wasmtime (0.0.0-0 → 36.0.18). Check the linked vendor or CERT advisories for patch status. Prefer the vendor or distribution advisory linked in Sources before changing production systems. This is a catalog interpretation, not a runbook.

Security analyst

Signals on file: CVSS 6.2. It is not currently listed in the CISA Known Exploited catalog. Sources contributing to this record: github, osv. Public exploit references, when present, are outbound links only and are not proof of active exploitation. This is a catalog interpretation of stored metadata.

Exploitation and remediation

  • Exploitation evidence

    Not listed as known exploited in CISA KEV. Not in the CISA KEV catalog.

  • Patch and remediation

    No required-action text is stored yet. Use the vendor or CERT links in Sources for patch availability.

  • Safe detection guidance

    Compare installed versions with the affected ranges below and verify the advisory from the original publisher. This site stores metadata and outbound links only; it does not ship exploit code or proof-of-concept payloads.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 14, 2026 · GitHub Advisory Database

    Detected

    This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q554-3cjc-rx7p For more information see the GitHub-hosted security advisory.

  2. Oct 14, 2026 · GitHub Advisory Database

    Fix available

    wasmtime fixed in 36.0.18

  3. Oct 14, 2026 · GitHub Advisory Database

    Fix available

    wasmtime fixed in 36.0.18

  4. Oct 14, 2026 · GitHub Advisory Database

    Updated

    This is an entry in the RustSec database for the Wasmtime security advisory located at https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q554-3cjc-rx7p For more information see the GitHub-hosted security advisory.

Affected

  • crates.io wasmtime0.0.0-0 → 36.0.18

Sources

  • GitHub Advisory DatabasePackage advisoryGHSA-q554-3cjc-rx7p

    GitHub Advisory Database record mirrored by OSV.

    github.com
  • OSV.devPackage advisoryRUSTSEC-2026-0363

    Component-model handle tables are capped only per instance and charged to no limit

    osv.dev

References