{"id":"CVE-2023-27371","url":"https://www.cyber-defence.io/tools/cve/CVE-2023-27371","generatedAt":"2026-10-24T04:22:07.872Z","title":"GNU libmicrohttpd before 0.9.76 allows remote DoS (Denial of Service) due to improper parsing of a multipart/form-data boundary in the postprocessor.c MHD_create_post_processor() method.","description":"GNU libmicrohttpd before 0.9.76 allows remote DoS (Denial of Service) due to improper parsing of a multipart/form-data boundary in the postprocessor.c MHD_create_post_processor() method. This allows an attacker to remotely send a malicious HTTP POST packet that includes one or more '\\0' bytes in a multipart/form-data boundary field, which - assuming a specific heap layout - will result in an out-of-bounds read and a crash in the find_boundary() function.","published":"2023-02-28T20:15:10.000Z","lastModified":"2026-10-14T23:17:16.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-125"],"affected":["gnu/libmicrohttpd"],"epss":{"score":0.01253,"percentile":0.69258,"date":"2026-10-23","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.25%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c97520a532f724238","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://github.com/0xhebi/CVEs/tree/main/GNU%20Libmicrohttpd","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html","source":"cve@mitre.org"},{"url":"https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.html","tags":["Mailing List"],"source":"cve@mitre.org"},{"url":"https://git.gnunet.org/libmicrohttpd.git/commit/?id=6d6846e20bfdf4b3eb1b592c97520a532f724238","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/0xhebi/CVEs/tree/main/GNU%20Libmicrohttpd","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2023/03/msg00029.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.gnu.org/archive/html/libmicrohttpd/2023-02/msg00000.html","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","source":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2023-27371","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."}