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+```toml
+[advisory]
+id = "RUSTSEC-0000-0000"
+package = "wasmtime"
+date = "2021-09-17"
+references = ["https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-v4cp-h94r-m7xf", "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4873-36h9-wv49", "https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q879-9g95-56mx"]
+categories = ["memory-corruption", "memory-exposure"]
+keywords = ["use-after-free", "out-of-bounds read", "out-of-bounds write", "Wasm", "garbage collection"]
+aliases = ["CVE-2021-39216", "CVE-2021-39219", "CVE-2021-39218"]
+
+[versions]
+patched = [">= 0.30.0"]
+unaffected = []
+
+[affected.functions]
+"wasmtime::Store::gc" = ["< 0.30.0"]
+"wasmtime::Linker::func_wrap" = ["< 0.30.0"]
+"wasmtime::Linker::func_new" = ["< 0.30.0"]
+```
+
+# Multiple Vulnerabilities in Wasmtime
+
+* [Use after free passing `externref`s to Wasm in
+  Wasmtime](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-v4cp-h94r-m7xf)
+
+* [Out-of-bounds read/write and invalid free with `externref`s and GC safepoints
+  in
+  Wasmtime](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-4873-36h9-wv49)
+
+* [Wrong type for `Linker`-define functions when used across two
+  `Engine`s](https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-q879-9g95-56mx)