---
id: CVE-2026-77322
title: SIPGO is a library for writing SIP services in the GO language
summary: >-
  SIPGO is a library for writing SIP services in the GO language. Prior to
  1.4.3, WSConnection.Read in sip/transport_ws.go creates a wsutil.Reader
  without setting MaxFrameSize, allowing NextFrame to accept a client-controlled
  header.Length…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-789
vendor: emiago
product: sipgo
affected:
  - sipgo < 1.4.3
patched:
  - github.com/emiago/sipgo 1.4.3
published: '2026-09-22'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:12:04.247'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77322'
references:
  - url: >-
      https://github.com/emiago/sipgo/commit/769e4bc958376e2363566c8f7042202b410becdc
    label: security-advisories@github.com
  - url: 'https://github.com/emiago/sipgo/releases/tag/v1.4.3'
    label: security-advisories@github.com
  - url: 'https://github.com/emiago/sipgo/security/advisories/GHSA-8h6x-h86x-75wh'
    label: security-advisories@github.com
  - url: 'https://github.com/emiago/sipgo/security/advisories/GHSA-8h6x-h86x-75wh'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-8h6x-h86x-75wh'
  - url: 'https://github.com/emiago/sipgo'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - go
  - osv
epss: 0.00609
epssPercentile: 0.47854
aliases:
  - GHSA-8h6x-h86x-75wh
ecosystem: go
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-23T15:07:56.457117Z'
ingestedAt: '2026-09-22T20:10:15.095Z'
---

## Overview

SIPGO is a library for writing SIP services in the GO language. Prior to 1.4.3, WSConnection.Read in sip/transport_ws.go creates a wsutil.Reader without setting MaxFrameSize, allowing NextFrame to accept a client-controlled header.Length before ParseMaxMessageLength is applied. An unauthenticated WS or WSS peer can send a frame header declaring an extremely large payload, causing an oversized allocation or a makeslice length panic before the payload is read and crashing or exhausting memory in the server process. This issue is fixed in version 1.4.3.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-77322)

Affected packages:

- `github.com/emiago/sipgo <= 1.4.2`

Patched in:

- `github.com/emiago/sipgo 1.4.3`

Source: https://github.com/advisories/GHSA-8h6x-h86x-75wh