Out-of-bounds Read in Opensips

CVE-2026-45705

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 fo…

Vulnerability class: Buffer Overflow

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

  • Opensips — versions >= 3.4.0, < 3.6.6, >= 4.0.0-beta, < 4.0.0-rc1

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-45705?
CVE-2026-45705 is a medium-severity vulnerability in Opensips, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2026-08-05.
How severe is CVE-2026-45705?
Medium severity. CVSS v3 base score is 5.3 out of 10.