[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-CVE-2026-56123":6},{"stargazers_count":4,"fetched_at":5},7,"2026-06-25T20:35:03.799Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":24,"aliases":25,"duplicate_of":9,"upstream":26,"downstream":27,"duplicates":28,"related":29,"reserved_at":9,"published_at":30,"modified_at":30,"state":31,"summary":32,"references_raw":39,"kevs":51,"epss":9,"epss_history":52,"metrics":53,"affected":63},"CVE-2026-56123","socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read through a signed char field causing a negative bytes_to_read value that is implicitly converted to size_t, resulting in an unbounded heap write into the 262-byte reply buffer with attacker-controlled size and content.",null,[11],{"_key":12,"id":12,"name":13,"description":14,"type":15,"status":16,"abstraction":17,"likelihood_of_exploit":18,"capec":19},"CWE-122","Heap-based Buffer Overflow","A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().","weakness","Draft","Variant","High",[20],{"id":21,"name":22,"techniques":23},"CAPEC-92","Forced Integer Overflow",[],[],[],[],[],[],[],"2026-06-25T15:43:19.580Z","PUBLISHED",{"cisa_kev":33,"cisa_ransomware":33,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":34,"severity_score":35,"severity_version":36,"severity_source":37,"severity_vector":38,"severity_status":31},false,"critical",9.2,"v4.0","cve.org","CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",[40,46],{"url":41,"sources":42,"tags":43},"http://www.dest-unreach.org/socat/CHANGES",[37],[44,45],"Release Notes","Patch",{"url":47,"sources":48,"tags":49},"https://www.vulncheck.com/advisories/socat-heap-buffer-overflow-via-socks5-reply-parser",[37],[50],"Third Party Advisory",[],[],[54],{"source":37,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":55,"cvss_v4_0":61},{"baseScore":56,"baseSeverity":57,"vectorString":58,"impactScore":59,"exploitabilityScore":60},8.1,"HIGH","CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",9.8,5.6,{"baseScore":35,"baseSeverity":62,"vectorString":38,"impactScore":9,"exploitabilityScore":9},"CRITICAL",[64],{"ecosystem":9,"name":65,"vendor":65,"product":65,"cpe_part":66,"purl_type":9,"purl_namespace":9,"purl_name":9,"source":9,"versions":67},"socat","a",[68],{"version":69,"is_range":70,"range_type":37,"version_start":71,"version_start_type":72,"version_end":73,"version_end_type":74,"fixed_in":9},">= 1.8.0.0, \u003C 1.8.1.2",true,"1.8.0.0","including","1.8.1.2","excluding"]