{"id":"PYSEC-2025-186","details":"A vulnerability has been found in wasm3 0.5.0 and classified as problematic. This vulnerability affects the function MarkSlotAllocated of the file source/m3_compile.c. The manipulation leads to out-of-bounds write. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.","aliases":["CVE-2025-6272","GHSA-rrmw-gv85-w824"],"modified":"2026-06-10T17:02:32.862102627Z","published":"2025-06-19T18:15:22Z","references":[{"type":"ADVISORY","url":"https://vuldb.com/?id.313276"},{"type":"ADVISORY","url":"https://vuldb.com/?submit.593008"},{"type":"REPORT","url":"https://github.com/wasm3/wasm3/issues/531"},{"type":"REPORT","url":"https://vuldb.com/?ctiid.313276"},{"type":"EVIDENCE","url":"https://github.com/user-attachments/files/19516600/wasm3_crash.txt"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-rrmw-gv85-w824"}],"affected":[{"package":{"name":"pywasm3","ecosystem":"PyPI","purl":"pkg:pypi/pywasm3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.5.0"}]}],"versions":["0.0.1","0.0.2","0.4.8","0.4.9","0.5.0"],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/pywasm3/PYSEC-2025-186.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}