{"answers":{"affected":"5 open source packages ship an affected version, including wasmtime. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-44216 in the wild and no public exploit code.","fix":"Upgrade wasmtime to a fixed version for your release line: 36.0.8, 43.0.2 or 44.0.1.","what":"CVE-2026-44216 is a medium-severity denial of service vulnerability in bytecodealliance wasmtime, published on 14 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-44216 and fix it if it is affected.\n\nWhat it is: CVE-2026-44216 is a medium-severity denial of service vulnerability in bytecodealliance wasmtime, published on 14 May 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-44216 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- wasmtime (crates.io): affected from 30.0.0; fixed in 36.0.8, 43.0.2, 44.0.1\n- wasmtime (crates.io): affected from 30.0.0; fixed in 36.0.8\n- wasmtime (crates.io): affected from 30.0.0; fixed in 36.0.8\n- wasmtime (crates.io): affected from 37.0.0; fixed in 43.0.2\n- wasmtime (crates.io): affected from 37.0.0; fixed in 43.0.2\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-2026-44216/ (Markdown: https://insights.sbomify.com/CVE-2026-44216/index.md)","id":"CVE-2026-44216","markdown":"https://insights.sbomify.com/CVE-2026-44216/index.md","name":"CVE-2026-44216","record":{"aliases":["DEBIAN-CVE-2026-44216","GHSA-p8xm-42r7-89xg","JLSEC-2026-1365","RUSTSEC-2026-0114","SUSE-SU-2026:22002-1","UBUNTU-CVE-2026-44216","openSUSE-SU-2026:10802-1","openSUSE-SU-2026:20863-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"WebAssembly runtime","requires_auth":"low_privilege","summary":"An attacker can cause a denial of service by triggering a panic in Wasmtime when allocating an excessively large WebAssembly table.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"wasmtime","vendor":"bytecodealliance"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-190","name":"Integer Overflow or Wraparound"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Wasmtime is a runtime for WebAssembly. From 30.0.0 to 36.0.8, 43.0.2, and 44.0.1, Wasmtime's allocation logic for a WebAssembly table contained checked arithmetic which panicked on overflow. This overflow is possible to trigger, and thus panic, when a table with an extremely large size is allocated. This is possible with the WebAssembly memory64 proposal where tables can have sizes in the 64-bit range as opposed to the previous 32-bit range which would not overflow. The panic happens when attempting to create a very large table, such as when instantiating a WebAssembly module or component. This vulnerability is fixed in 36.0.8, 43.0.2, and 44.0.1.","ecosystems":["SUSE:Linux Enterprise Server 16.0","SUSE:Linux Enterprise Server for SAP applications 16.0","crates.io","openSUSE:Tumbleweed"],"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":"Wasmtime: Panic when allocating a table exceeding the size of the host's address space","id":"CVE-2026-44216","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":8,"n_references":1,"next":{"headline":"sse-channel: SSE Injection via unsanitized event fields","id":"CVE-2026-44217"},"packages":[{"ecosystem":"crates.io","fixed":["36.0.8","43.0.2","44.0.1"],"introduced":["30.0.0","37.0.0","44.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"RUSTSEC-2026-0114"},{"ecosystem":"crates.io","fixed":["36.0.8"],"introduced":["30.0.0"],"last_affected":[],"package":"wasmtime","purl":null,"source":"GHSA-p8xm-42r7-89xg"},{"ecosystem":"crates.io","fixed":["36.0.8"],"introduced":["30.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"GHSA-p8xm-42r7-89xg"},{"ecosystem":"crates.io","fixed":["43.0.2"],"introduced":["37.0.0"],"last_affected":[],"package":"wasmtime","purl":null,"source":"GHSA-p8xm-42r7-89xg"},{"ecosystem":"crates.io","fixed":["43.0.2"],"introduced":["37.0.0"],"last_affected":[],"package":"wasmtime","purl":"pkg:cargo/wasmtime","source":"GHSA-p8xm-42r7-89xg"},{"ecosystem":"SUSE:Linux Enterprise Server 16.0","fixed":["0.26.8-160000.2.1"],"introduced":["0"],"last_affected":[],"package":"tree-sitter","purl":"pkg:rpm/suse/tree-sitter\u0026distro=SUSE%20Linux%20Enterprise%20Server%2016.0","source":"SUSE-SU-2026:22002-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP applications 16.0","fixed":["0.26.8-160000.2.1"],"introduced":["0"],"last_affected":[],"package":"tree-sitter","purl":"pkg:rpm/suse/tree-sitter\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0","source":"SUSE-SU-2026:22002-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["0.26.8-3.1"],"introduced":["0"],"last_affected":[],"package":"tree-sitter","purl":"pkg:rpm/opensuse/tree-sitter\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:10802-1"}],"prev":{"headline":"NanaZip: Heap out-of-bounds write in NanaZip UFS directory parser","id":"CVE-2026-44215"},"products":["wasmtime"],"published":"2026-05-14","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":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2026-07-28","vendors":["bytecodealliance"]},"summary":"An attacker can cause a denial of service by triggering a panic in Wasmtime when allocating an excessively large WebAssembly table.","url":"https://insights.sbomify.com/CVE-2026-44216/"}