{"id":"CVE-2026-3945","state":"PUBLISHED","title":"tinyproxy Integer Overflow in HTTP Chunked Transfer-Encoding Parser Leading to Denial of Service","description":"An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). The issue occurs because chunk size values are parsed using strtol without properly validating overflow conditions (e.g., errno == ERANGE).","publishedAt":"2026-03-30T07:05:23.295Z","updatedAt":"2026-08-10T11:43:50.158Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","source":"TuranSec"},"assigner":"TuranSec","products":["tinyproxy tinyproxy"],"affected":[{"vendor":"tinyproxy","product":"tinyproxy","defaultStatus":"unaffected","versions":[{"version":"<=1.11.3","status":"affected"}]}],"references":["https://github.com/tinyproxy/tinyproxy/issues/602","https://github.com/tinyproxy/tinyproxy/pull/603","https://github.com/tinyproxy/tinyproxy/commit/969852c","https://github.com/tinyproxy/tinyproxy/commit/bb7edc4","https://github.com/tinyproxy/tinyproxy/releases"],"weaknesses":["CWE-190"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/3xxx/CVE-2026-3945.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-3945","state":"PUBLISHED","datePublished":"2026-03-30T07:05:23.295Z","dateUpdated":"2026-08-10T11:43:50.158Z","assignerShortName":"TuranSec","assignerOrgId":"309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c","dateReserved":"2026-03-11T08:30:57.837Z"},"containers":{"cna":{"title":"tinyproxy Integer Overflow in HTTP Chunked Transfer-Encoding Parser Leading to Denial of Service","descriptions":[{"lang":"en","value":"An integer overflow vulnerability in the HTTP chunked transfer encoding parser in tinyproxy up to and including version 1.11.3 allows an unauthenticated remote attacker to cause a denial of service (DoS). 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