{"affected":[{"defaultStatus":"unaffected","ecosystem":"pypi","packageName":"Scapy","product":"scapy","source":"CNA: VulnCheck","vendor":"secdev","versions":[{"lessThan":"2.8.0","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"2.8.0","versionType":"semver"}]}],"cveId":"CVE-2026-128237","cwes":["CWE-407"],"description":"Scapy before 2.8.0 contains a denial of service vulnerability in BER_num_dec() and BERcodec_OID.do_dec() that allows remote attackers to exhaust CPU by supplying oversized OID arcs. Attackers can send ASN.1/BER data with many base-128 continuation bytes to cause quadratic CPU consumption or an uncaught ValueError crash on Python 3.11+.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":6.9,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},{"score":5.3,"severity":"medium","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},{"score":6.9,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","version":"4.0"},{"score":5.3,"severity":"medium","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}],"modifiedAt":1794565091380,"publishedAt":1794562429101,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/secdev/scapy/security/advisories/GHSA-xx44-g48m-mjp6"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/scapy-before-2.8.0-denial-of-service-via-quadratic-ber-oid-decoding"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/secdev/scapy/security/advisories/GHSA-xx44-g48m-mjp6"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/scapy-before-2.8.0-denial-of-service-via-quadratic-ber-oid-decoding"}],"remediation":[],"revision":"9aa90f3a30188ff5bb975b669511f49d47dd19581665850f11fc7e305abc3870","sources":[{"modifiedAt":1794562429101,"name":"CNA: VulnCheck","retrievedAt":1794564849389,"url":"https://www.cve.org/CVERecord?id=CVE-2026-128237"},{"modifiedAt":1794565091380,"name":"NVD","retrievedAt":1794572255746,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-128237"}],"ssvc":null,"status":"published","title":"Scapy before 2.8.0 Denial of Service via Quadratic BER OID Decoding","updatedAt":1794572255746}