Vulnerability · Published Mar 20, 2026 · Assigned by GitHub_M
CVE-2026-33069PJSIP has an Out-of-bounds Read in SIP multipart parsing
Medium 6.9
In plain English
A medium-severity out-of-bounds read in pjproject from pjsip. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a cascading out-of-bounds heap read in pjsip_multipart_parse(). After boundary string matching, curptr is advanced past the delimiter without verifying it has not reached the buffer end. This allows 1-2 bytes of adjacent heap memory to be read. All applications that process incoming SIP messages with multipart bodies or SDP content are potentially affected. This issue is resolved in version 2.17.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | pjproject | 2.17-r0 | ALPINE-CVE-2026-33069 |
| Debian:14 | asterisk | 1:22.10.0+dfsg+~cs6.17.60671434-1 | DEBIAN-CVE-2026-33069 |
Affected products (as reported)
Weakness: CWE-125 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N