{"id":"CVE-2026-119760","title":"sniproxy through 0.7.0 NULL Pointer Dereference via resolv_cancel()","summary":"sniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-476"],"vendor":"dlundquist","product":"sniproxy","affected":["sniproxy <= 0.7.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-05T02:25:48.882313Z"},"published":"2026-10-30","updated":"2026-11-05","sourceUpdated":"2026-11-05T02:25:58.700Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-119760","references":[{"url":"https://github.com/dlundquist/sniproxy/issues/411"},{"url":"https://github.com/dlundquist/sniproxy/blob/1cc625ea41796695a54593d1bd779366b82b8b4e/src/connection.c#L737-L738"},{"url":"https://github.com/dlundquist/sniproxy/blob/1cc625ea41796695a54593d1bd779366b82b8b4e/src/resolv.c#L219-L224"},{"url":"https://github.com/renaudallard/sniproxy/commit/d5d78290c8fe15d9aa12185d2c57739b7b0c6a6b"},{"url":"https://github.com/renaudallard/sniproxy/commit/17986ba7397297313331297cac3b9eb3f0ba96b7"},{"url":"https://github.com/dlundquist/sniproxy"},{"url":"https://www.vulncheck.com/advisories/sniproxy-through-0.7.0-null-pointer-dereference-via-resolv-cancel","label":"VulnCheck Advisory: sniproxy through 0.7.0 NULL Pointer Dereference via resolv_cancel()"}],"tags":["cve.org"],"epss":0.00477,"epssPercentile":0.41433,"ingestedAt":"2026-11-05T21:36:00.691Z","slug":"CVE-2026-119760","body":"## Overview\n\nsniproxy through 0.7.0 contains a NULL pointer dereference vulnerability in resolv_cancel() that allows remote unauthenticated attackers to crash the daemon by sending overlong hostnames. Attackers can send a 254 or 255 character TLS SNI name or HTTP Host header matching a wildcard backend, then close the connection to terminate the proxy.\n\n## Affected\n\n- `sniproxy <= 0.7.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}