{"id":"CVE-2026-45705","published":"2026-08-05T00:16:59.890","lastModified":"2026-08-05T14:17:06.777","description":"OpenSIPS is a Session Initiation Protocol (SIP) server implementation. In versions prior to 3.6.6 and 4.0.0-rc1, the find_line_delimiter() function in the multipart body parser performs an out-of-bounds read via strncmp() when searching for MIME boundary delimiters. After finding a -- pattern near the end of the body, the function compares delimiter.len bytes (typically 20-70) starting from a position at or past the logical end of the body buffer, reading past the body boundary. The bug triggers when a SIP message has Content-Type: multipart/mixed with a boundary parameter and its body contains -- within two to three bytes of the body's end without being followed by the actual boundary delimiter. This issue has been fixed in versions 3.6.6 and 4.0.0-rc1.","cvssScore":5.3,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://github.com/OpenSIPS/opensips/commit/4d23613b65579b073784a07a65d3bf52443a4efb","tags":[]},{"url":"https://github.com/OpenSIPS/opensips/commit/5f103effaf5f372cccffe0b138f16998eba12668","tags":[]},{"url":"https://github.com/OpenSIPS/opensips/security/advisories/GHSA-chxf-9368-fqcp","tags":[]},{"url":"https://github.com/OpenSIPS/opensips/security/advisories/GHSA-chxf-9368-fqcp","tags":[]}],"exploitRefs":[{"url":"https://github.com/OpenSIPS/opensips/commit/4d23613b65579b073784a07a65d3bf52443a4efb","tags":[]},{"url":"https://github.com/OpenSIPS/opensips/commit/5f103effaf5f372cccffe0b138f16998eba12668","tags":[]},{"url":"https://github.com/OpenSIPS/opensips/security/advisories/GHSA-chxf-9368-fqcp","tags":[]},{"url":"https://github.com/OpenSIPS/opensips/security/advisories/GHSA-chxf-9368-fqcp","tags":[]}],"hasPoc":true,"ai":null}