{"id":"CVE-2026-22903","aliases":["EUVD-2026-6925","GHSA-23jw-jg3f-6352"],"status":"published","title":"Stack Overflow via SESSIONID Cookie in lighttpd","description":"An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00759,"percentile":0.55588,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-02-09T07:39:42Z","modified":"2026-06-17T10:20:35Z","products":[{"vendor":"wago","product":"0852-1322"},{"vendor":"wago","product":"0852-1328"}],"references":[{"url":"https://certvde.com/de/advisories/VDE-2026-004"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22903"},{"url":"https://github.com/advisories/GHSA-23jw-jg3f-6352"}],"sources":{"cve":[{"id":"CVE-2026-22903","title":"Stack Overflow via SESSIONID Cookie in lighttpd","description":"An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.","status":"published","published":"2026-02-09T07:39:42.537Z","modified":"2026-02-09T15:36:36.79Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T13:39:16.730222Z"}],"euvd":[{"id":"EUVD-2026-6925","description":"An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.","status":"published","published":"2026-02-09T07:39:42Z","modified":"2026-02-09T15:36:36Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T19:48:42.465921Z"}],"ghsa":[{"id":"GHSA-23jw-jg3f-6352","title":"An unauthenticated remote attacker can send a crafted HTTP request containing an overly long...","description":"An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.","status":"published","published":"2026-02-09T09:30:21Z","modified":"2026-02-09T09:30:28Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:06:05.991559Z"}],"nvd":[{"id":"CVE-2026-22903","description":"An unauthenticated remote attacker can send a crafted HTTP request containing an overly long SESSIONID cookie. This can trigger a stack buffer overflow in the modified lighttpd server, causing it to crash and potentially enabling remote code execution due to missing stack protections.","status":"published","published":"2026-02-09T08:16:10.103Z","modified":"2026-06-17T10:20:35.31Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:12:05.52517Z"}]}}