{"id":"CVE-2023-49095","aliases":["EUVD-2023-53105","GHSA-fpxw-rw9v-2gmx"],"status":"published","title":"nexkey allows arbitrary users to impersonate any remote user due to missing signature validation","description":"nexkey is a microblogging platform. Insufficient validation of ActivityPub requests received in inbox could allow any user to impersonate another user in certain circumstances. This issue has been patched in version 12.122.2.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00565,"percentile":0.47271,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2023-11-30T07:10:10Z","modified":"2026-10-28T02:30:36Z","products":[{"vendor":"nexryai","product":"nexkey"}],"references":[{"url":"https://github.com/nexryai/nexkey/security/advisories/GHSA-fpxw-rw9v-2gmx","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","advisory"]},{"url":"https://github.com/nexryai/nexkey/commit/b96da0eac5a1e75abba94cf926f1251842829bab","tags":["x_refsource_MISC","x_transferred","Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49095.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49095","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-49095","title":"nexkey allows arbitrary users to impersonate any remote user due to missing signature validation","description":"nexkey is a microblogging platform. Insufficient validation of ActivityPub requests received in inbox could allow any user to impersonate another user in certain circumstances. This issue has been patched in version 12.122.2.","status":"published","published":"2023-11-30T07:10:10.994Z","modified":"2024-11-27T15:54:12.214Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:35:12.998024Z"}],"euvd":[{"id":"EUVD-2023-53105","description":"nexkey is a microblogging platform. Insufficient validation of ActivityPub requests received in inbox could allow any user to impersonate another user in certain circumstances. This issue has been patched in version 12.122.2.","status":"published","published":"2023-11-30T07:10:10Z","modified":"2024-11-27T15:54:12Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T00:04:45.657538Z"}],"nvd":[{"id":"CVE-2023-49095","description":"nexkey is a microblogging platform. Insufficient validation of ActivityPub requests received in inbox could allow any user to impersonate another user in certain circumstances. This issue has been patched in version 12.122.2.","status":"published","published":"2023-11-30T07:15:09.133Z","modified":"2026-06-17T06:35:21.37Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:08:49.393375Z"}],"osv":[{"id":"CVE-2023-49095","title":"nexkey allows arbitrary users to impersonate any remote user due to missing signature validation","description":"nexkey is a microblogging platform. Insufficient validation of ActivityPub requests received in inbox could allow any user to impersonate another user in certain circumstances. This issue has been patched in version 12.122.2.","status":"published","published":"2023-11-30T07:10:10.994Z","modified":"2026-10-28T02:30:36.300497134Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:44:34.72355Z"}]}}