{"answers":{"affected":"7 open source packages ship an affected version, including wasmtime. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-41880 in the wild and no public exploit code.","fix":"Upgrade wasmtime to a fixed version for your release line: 10.0.2, 11.0.2 or 12.0.2.","what":"CVE-2023-41880 is a low-severity vulnerability in bytecodealliance wasmtime, published on 15 Sep 2023. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-41880 and fix it if it is affected.\n\nWhat it is: CVE-2023-41880 is a low-severity vulnerability in bytecodealliance wasmtime, published on 15 Sep 2023. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-41880 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wasmtime (crates.io): affected from 0.0.0-0; fixed in 10.0.2, 11.0.2, 12.0.2\n- wasmtime (crates.io): affected from 10.0.0; fixed in 10.0.2\n- wasmtime (crates.io): affected from 10.0.0; fixed in 10.0.2\n- wasmtime (crates.io): affected from 11.0.0; fixed in 11.0.2\n- wasmtime (crates.io): affected from 11.0.0; fixed in 11.0.2\n- wasmtime (crates.io): affected from 12.0.0; fixed in 12.0.2\n- wasmtime (crates.io): affected from 12.0.0; fixed in 12.0.2\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-41880/ (Markdown: https://insights.sbomify.com/CVE-2023-41880/index.md)","id":"CVE-2023-41880","markdown":"https://insights.sbomify.com/CVE-2023-41880/index.md","name":"CVE-2023-41880","record":{"aliases":["DEBIAN-CVE-2023-41880","GHSA-gw5p-q8mj-p7gh","RUSTSEC-2023-0091"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["other"],"network_reachable":"yes","non_default_config":false,"product_category":"WebAssembly runtime","requires_auth":"high_privilege","summary":"Wasmtime miscompiles specific SIMD instructions on x86_64, causing incorrect results in WebAssembly programs without breaking sandbox isolation.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"wasmtime","vendor":"bytecodealliance"}],"cvss":{"score":2.2,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-193","name":"Off-by-one Error"}],"description":"Wasmtime is a standalone runtime for WebAssembly. Wasmtime versions from 10.0.0 to versions 10.02, 11.0.2, and 12.0.1 contain a miscompilation of the WebAssembly `i64x2.shr_s` instruction on x86_64 platforms when the shift amount is a constant value that is larger than 32. Only x86_64 is affected so all other targets are not affected by this. The miscompilation results in the instruction producing an incorrect result, namely the low 32-bits of the second lane of the vector are derived from the low 32-bits of the second lane of the input vector instead of the high 32-bits. The primary impact of this issue is that any WebAssembly program using the `i64x2.shr_s` with a constant shift amount larger than 32 may produce an incorrect result.\n\nThis issue is not an escape from the WebAssembly sandbox. Execution of WebAssembly guest programs will still behave correctly with respect to memory sandboxing and isolation from the host. Wasmtime considers non-spec-compliant behavior as a security issue nonetheless.\n\nThis issue was discovered through fuzzing of Wasmtime's code generator Cranelift.\n\nWasmtime versions 10.0.2, 11.0.2, and 12.0.2 are all patched to no longer have this miscompilation. This issue only affects x86_64 hosts and the only workaround is to either scan for this pattern in wasm modules which is nontrivial or to disable the SIMD proposal for WebAssembly. Users prior to 10.0.0 are unaffected by this vulnerability.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Miscompilation of wasm `i64x2.shr_s` instruction with constant input on x86_64","id":"CVE-2023-41880","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"other","year":"2023"},"n_packages":7,"n_references":5,"next":{"headline":"Deleting a collaboration should also delete linked resources","id":"CVE-2023-41881"},"packages":[{"ecosystem":"crates.io","fixed":["10.0.2","11.0.2","12.0.2"],"introduced":["0.0.0-0","11.0.0","12.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"RUSTSEC-2023-0091"},{"ecosystem":"crates.io","fixed":["10.0.2"],"introduced":["10.0.0"],"last_affected":[],"package":"wasmtime","purl":null,"source":"GHSA-gw5p-q8mj-p7gh"},{"ecosystem":"crates.io","fixed":["10.0.2"],"introduced":["10.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"GHSA-gw5p-q8mj-p7gh"},{"ecosystem":"crates.io","fixed":["11.0.2"],"introduced":["11.0.0"],"last_affected":[],"package":"wasmtime","purl":null,"source":"GHSA-gw5p-q8mj-p7gh"},{"ecosystem":"crates.io","fixed":["11.0.2"],"introduced":["11.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"GHSA-gw5p-q8mj-p7gh"},{"ecosystem":"crates.io","fixed":["12.0.2"],"introduced":["12.0.0"],"last_affected":[],"package":"wasmtime","purl":null,"source":"GHSA-gw5p-q8mj-p7gh"},{"ecosystem":"crates.io","fixed":["12.0.2"],"introduced":["12.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"GHSA-gw5p-q8mj-p7gh"}],"prev":{"headline":"Magento LTS's guest order \"protect code\" can be brute-forced too easily","id":"CVE-2023-41879"},"products":["wasmtime"],"published":"2023-09-15","related":[{"cvss_score":9,"headline":"Wasmtime miscompiled guest heap access enables sandbox escape on aarch64 Cranelift","id":"CVE-2026-34971","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":9,"headline":"Wasmtime with Winch compiler backend on aarch64 may allow a sandbox-escaping memory access","id":"CVE-2026-34987","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":8.6,"headline":"Wasmtime vulnerable to data leakage between instances in the pooling allocator","id":"CVE-2022-39393","kev_date_added":null,"published":"2022-11-10"},{"cvss_score":8.1,"headline":"Use after free in Wasmtime","id":"CVE-2022-24791","kev_date_added":null,"published":"2022-03-31"},{"cvss_score":7.5,"headline":"Wasmtime: WASI path_open(TRUNCATE) bypasses `FilePerms::WRITE` host restriction","id":"CVE-2026-47261","kev_date_added":null,"published":"2026-06-15"},{"cvss_score":6.9,"headline":"Wasmtime has a Heap OOB read in component model UTF-16 to latin1+utf16 string transcoding","id":"CVE-2026-34941","kev_date_added":null,"published":"2026-04-09"},{"cvss_score":6.9,"headline":"Wasmtime is vulnerable to panic when dropping a `[Typed]Func::call_async` future","id":"CVE-2026-27195","kev_date_added":null,"published":"2026-02-24"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-09-24","vendors":["bytecodealliance"]},"summary":"Wasmtime miscompiles specific SIMD instructions on x86_64, causing incorrect results in WebAssembly programs without breaking sandbox isolation.","url":"https://insights.sbomify.com/CVE-2023-41880/"}