{"id":"GHSA-rrmw-gv85-w824","summary":"pywasm3 has Improper Restriction of Operations within the Bounds of a Memory Buffer","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","PYSEC-2025-186"],"modified":"2026-06-09T19:26:22.361015244Z","published":"2025-06-19T18:31:47Z","database_specific":{"cwe_ids":["CWE-119"],"severity":"LOW","github_reviewed":true,"github_reviewed_at":"2026-06-09T19:09:31Z","nvd_published_at":"2025-06-19T18:15:22Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6272"},{"type":"WEB","url":"https://github.com/wasm3/wasm3/issues/531"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/pywasm3/PYSEC-2025-186.yaml"},{"type":"WEB","url":"https://github.com/user-attachments/files/19516600/wasm3_crash.txt"},{"type":"PACKAGE","url":"https://github.com/wasm3/pywasm3"},{"type":"WEB","url":"https://github.com/wasm3/pywasm3/blob/main/wasm3/m3_compile.c#L333"},{"type":"WEB","url":"https://vuldb.com/?ctiid.313276"},{"type":"WEB","url":"https://vuldb.com/?id.313276"},{"type":"WEB","url":"https://vuldb.com/?submit.593008"}],"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"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/06/GHSA-rrmw-gv85-w824/GHSA-rrmw-gv85-w824.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},{"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"}]}