CVE-2026-40892
Last modified
CVE-2026-40892 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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). EPSS estimates a 0.42% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pjsip | Pjsip | < 2.17 |
References
- https://github.com/pjsip/pjproject/security/advisories/GHSA-2wcg-w3c4-48r7Mitigation, Patch, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-40892?
How severe is CVE-2026-40892?
How do I fix CVE-2026-40892?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-40887Vendure is an open-source headless commerce platform. Starti…9.1
- CVE-2026-40888Frappe HR is an open-source human resources management solut…6.5
- CVE-2026-40889Frappe HR is an open-source human resources management solut…6.5
- CVE-2026-4089The Twittee Text Tweet plugin for WordPress is vulnerable to…6.4
- CVE-2026-40890The package `github.com/gomarkdown/markdown` is a Go library…7.5
- CVE-2026-40891OpenTelemetry dotnet is a dotnet telemetry framework. From 1…5.3
- CVE-2026-40893Gotenberg is a Docker-powered stateless API for PDF files. P…8.2
- CVE-2026-40894OpenTelemetry dotnet is a dotnet telemetry framework. In Ope…5.3
- CVE-2026-40895follow-redirects is an open source, drop-in replacement for …7.5
- CVE-2026-40896OpenProject is open-source, web-based project management sof…7.1
- CVE-2026-40897Math.js is an extensive math library for JavaScript and Node…8.8
- CVE-2026-40898quic-go is an implementation of the QUIC protocol in Go. Pri…7.5
Are you affected by CVE-2026-40892?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST