{"id":"CVE-2026-106803","published":"2026-11-02T17:17:33.270","lastModified":"2026-11-02T19:34:23.993","description":"A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_registrar_pcscf module. When processing a crafted application/reginfo+xml NOTIFY message, process_contact() copies an attacker-controlled port value from the alias parameter into a fixed 5-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger stack corruption and terminate the P-CSCF process, resulting in denial of service.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://gist.github.com/hackeryounow/7d7ccc9ec501a5d8c9143b2e1bcc11cb","tags":[]},{"url":"https://github.com/kamailio/kamailio/commit/21261436492f0014930e804e20586e3833bb91b9","tags":[]},{"url":"https://github.com/kamailio/kamailio/issues/4954","tags":[]},{"url":"https://github.com/kamailio/kamailio/pull/4958","tags":[]}],"exploitRefs":[{"url":"https://gist.github.com/hackeryounow/7d7ccc9ec501a5d8c9143b2e1bcc11cb","tags":[]},{"url":"https://github.com/kamailio/kamailio/commit/21261436492f0014930e804e20586e3833bb91b9","tags":[]},{"url":"https://github.com/kamailio/kamailio/issues/4954","tags":[]},{"url":"https://github.com/kamailio/kamailio/pull/4958","tags":[]}],"hasPoc":true,"ai":null}