{"id":"CVE-2018-15503","aliases":["EUVD-2018-7380","GHSA-wp68-99q2-jm6p"],"status":"published","title":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the...","description":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the deserialization process. An attacker can craft a serialized object to exploit this vulnerability and cause a SEGV.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02272,"percentile":0.83191,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2018-08-18T02:00:00Z","modified":"2026-10-20T13:36:08Z","products":[{"vendor":"swoole","product":"swoole"}],"references":[{"url":"https://github.com/swoole/swoole-src/issues/1882","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Vendor Advisory","report"]},{"url":"https://github.com/swoole/swoole-src/commit/4cdbce5d9bf2fe596bb6acd7d6611f9e8c253a76","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://x-c3ll.github.io/posts/swoole-deserialization-cve-2018-15503/","tags":["x_refsource_MISC","x_transferred","Technical Description","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-15503"},{"url":"https://github.com/advisories/GHSA-wp68-99q2-jm6p"}],"sources":{"cve":[{"id":"CVE-2018-15503","description":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the deserialization process. An attacker can craft a serialized object to exploit this vulnerability and cause a SEGV.","status":"published","published":"2018-08-18T02:00:00Z","modified":"2024-08-05T09:54:03.442Z","updated_at":"2026-11-02T14:35:03.288698Z"}],"euvd":[{"id":"EUVD-2018-7380","description":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the deserialization process. An attacker can craft a serialized object to exploit this vulnerability and cause a SEGV.","status":"published","published":"2018-08-18T02:00:00Z","modified":"2024-08-05T09:54:03Z","updated_at":"2026-11-03T02:39:44.728742Z"}],"ghsa":[{"id":"GHSA-wp68-99q2-jm6p","title":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the...","description":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the deserialization process. An attacker can craft a serialized object to exploit this vulnerability and cause a SEGV.","status":"published","published":"2022-05-14T02:00:53Z","modified":"2023-02-02T05:04:58Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:51:59.92181Z"}],"nvd":[{"id":"CVE-2018-15503","description":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the deserialization process. An attacker can craft a serialized object to exploit this vulnerability and cause a SEGV.","status":"published","published":"2018-08-18T02:29:01.903Z","modified":"2026-06-17T01:42:39.673Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:04:36.842579Z"}],"osv":[{"id":"CVE-2018-15503","description":"The unpack implementation in Swoole version 4.0.4 lacks correct size checks in the deserialization process. An attacker can craft a serialized object to exploit this vulnerability and cause a SEGV.","status":"published","published":"2018-08-18T02:29:01.903Z","modified":"2026-10-20T13:36:08.217897634Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:08.242347Z"}]}}