{"id":"CVE-2026-101021","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-101021","generatedAt":"2026-10-27T22:46:25.735Z","title":"MultipartInputStream performs inefficient boundary matching and unnecessary buffer copying.","description":"MultipartInputStream performs inefficient boundary matching and unnecessary buffer copying. Crafted multipart input can force excessive boundary comparisons and repeated copying.","published":"2026-10-16T15:16:59.000Z","lastModified":"2026-10-16T20:04:30.000Z","status":"Deferred","sourceIdentifier":"ics-cert@hq.dhs.gov","cvss":{"version":"4.0","score":8.7,"severity":"HIGH","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-407"],"affected":[],"epss":{"score":0.00377,"percentile":0.3146,"date":"2026-10-26","history":[{"date":"2026-10-17","score":0.00343,"percentile":0.26304}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.38%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T15:16:59.000Z","detail":{"score":"8.7","severity":"HIGH","publishedAt":"2026-10-16T15:16:58.837Z"},"summary":"New CVE, high severity (CVSS 8.7)."}],"references":[{"url":"https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-288-02.json","source":"ics-cert@hq.dhs.gov"},{"url":"https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-288-02","source":"ics-cert@hq.dhs.gov"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-101021","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}