{"id":"CVE-2025-61622","aliases":["GHSA-538v-3wq9-4h3r","PYSEC-2026-490","PYSEC-2026-491"],"url":"https://o3.security/vulnerability/CVE-2025-61622","summary":"Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory","details":"Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is vulnerable to remote code execution.\n\nUsers are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.","published":"2025-10-01T09:55:05.557Z","modified":"2026-07-15T01:49:07.704055656Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pyfory","fixedVersion":"0.12.3"},{"ecosystem":"PyPI","name":"pyfury","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/09/29/3"},{"type":"WEB","url":"https://pypi.python.org"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/61xxx/CVE-2025-61622.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/vfn9hp9qt06db5yo1gmj3l114o3o2csd"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61622"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:07.704055656Z"}}