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Description

PJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a stack buffer overflow exists in pjsip_auth_create_digest2() in PJSIP when using pre-computed digest credentials (PJSIP_CRED_DATA_DIGEST). The function copies credential data using cred_info->data.slen as the length without an upper-bound check, which can overflow the fixed-size ha1 stack buffer (128 bytes) if data.slen exceeds the expected digest string length.

PUBLISHED Reserved 2026-04-15 | Published 2026-04-21 | Updated 2026-04-21 | Assigner GitHub_M




HIGH: 8.1CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U

Problem types

CWE-121: Stack-based Buffer Overflow

Product status

<= 2.16
affected

References

github.com/...roject/security/advisories/GHSA-2wcg-w3c4-48r7

github.com/...ommit/c82123ea6f3c3652bbc9ebd5e9e658c301451687

cve.org (CVE-2026-40892)

nvd.nist.gov (CVE-2026-40892)

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