{"id":"CVE-2026-88355","revision":"9357cdaca4f541779add207fbf5e7567","records":[{"revision":"9357cdaca4f541779add207fbf5e7567","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-88355","aliases":[],"title":"An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te…","description":"An incorrect buffer size calculation vulnerability exists in tinyexpr commit 4a7456e in new_expr(). For arity-0 expression nodes, including constants, variables, and zero-argument functions, the function allocates less memory than sizeof(te_expr) but treats the returned allocation as a complete te_expr object. This results in undefined behavior and can cause deterministic process termination in UBSan-instrumented builds.","state":0,"publishedAt":"2026-09-24T00:00:00+00:00","modifiedAt":"2026-10-06T17:42:50.871+00:00","affected":[{"ecosystem":"Vendor product","name":"n/a","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"version\": \"n/a\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://github.com/codeplea/tinyexpr/issues/145","https://github.com/szaydel/tinyexpr/commit/fe7459728c2ab8d2f91365abe56601cdd0e24f9b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-88355","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-88355","identifiers":["CVE-2026-88355"]},"retained":false,"historicalAffected":[]}],"coverage":[]}