{"id":"CVE-2026-55246","title":"bincookie is a header-only binarycookies parser","summary":"bincookie is a header-only binarycookies parser. Prior to 0.1.9, bincookie_init_file() in bincookie.h allocates a buffer using the actual .binarycookies file length but trusts the file-controlled num_pages field as the loop bound for byt…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-122","CWE-787"],"vendor":"Tatsh","product":"bincookie","affected":["bincookie < 0.1.9"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T19:17:40.430","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55246","references":[{"url":"https://github.com/Tatsh/bincookie/commit/bc1433c1ee4d0284750ff85c8437f1b8df91ab3b","label":"security-advisories@github.com"},{"url":"https://github.com/Tatsh/bincookie/releases/tag/v0.1.9","label":"security-advisories@github.com"},{"url":"https://github.com/Tatsh/bincookie/security/advisories/GHSA-22pc-xxw4-q849","label":"security-advisories@github.com"},{"url":"https://github.com/Tatsh/bincookie/security/advisories/GHSA-22pc-xxw4-q849","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-10-15T18:27:22.750510Z"},"ingestedAt":"2026-10-15T18:23:58.449Z","slug":"CVE-2026-55246","body":"## Overview\n\nbincookie is a header-only binarycookies parser. Prior to 0.1.9, bincookie_init_file() in bincookie.h allocates a buffer using the actual .binarycookies file length but trusts the file-controlled num_pages field as the loop bound for byte-swapping page_sizes entries. A crafted file can make the loop read and write beyond the heap allocation, and related unvalidated page sizes and cookie_offsets can drive additional out-of-bounds accesses in page and cookie iteration. Applications that parse an attacker-supplied binarycookies file may crash or suffer heap corruption that can potentially enable code execution. This issue is fixed in version 0.1.9.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":55,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":222684,"id":"CVE-2026-55246","ts":1792092523603,"field":"exploit_available","old":"false","new":"true"}]}