CVE-2023-27371EPSS p65.4%
CVE-2023-27371CVE-2023-27371
gnu / libmicrohttpd
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.
Scoring
| CVSS | 5.9 () |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| EPSS | 1.24% probability of exploitation · percentile 65.4% · 2026-06-18T12:00:27Z |
| Last modified | 2026-06-17 |