{"id":"CVE-2026-3945","summary":"tinyproxy Integer Overflow in HTTP Chunked Transfer-Encoding Parser Leading to Denial of Service","details":"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).","modified":"2026-08-12T03:51:30.857169835Z","published":"2026-03-30T07:05:23.295Z","related":["openSUSE-SU-2026:10471-1","openSUSE-SU-2026:20456-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3945.json","cna_assigner":"TuranSec","cwe_ids":["CWE-190"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3945.json"},{"type":"ADVISORY","url":"https://github.com/tinyproxy/tinyproxy/releases"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-3945"},{"type":"REPORT","url":"https://github.com/tinyproxy/tinyproxy/issues/602"},{"type":"FIX","url":"https://github.com/tinyproxy/tinyproxy/commit/969852c"},{"type":"FIX","url":"https://github.com/tinyproxy/tinyproxy/commit/bb7edc4"},{"type":"FIX","url":"https://github.com/tinyproxy/tinyproxy/pull/603"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tinyproxy/tinyproxy","events":[{"introduced":"0"},{"fixed":"969852c"},{"fixed":"bb7edc4"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"last_affected":"1.11.3"}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-3945.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}