SIPGO: DoS via unvalidated WebSocket frame length (CVE-2026-77322) | HOL Guard CVE

High · CVSS 7.5CVE-2026-77322GHSA-8H6X-H86X-75WH

SIPGO: DoS via unvalidated WebSocket frame length

Answer in brief

CVE-2026-77322 records a High severity (CVSS 7.5) vulnerability in SIPGO: DoS via unvalidated WebSocket frame length. The current sources do not mark it as known exploited. The current feed maps emiago/sipgo (generic), github.com/emiago/sipgo (go). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 22, 2026Updated Sep 22, 2026Source checked Sep 22, 2026First seen by HOL Sep 22, 2026Material review Sep 22, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.5
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps emiago/sipgo (generic), github.com/emiago/sipgo (go). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
emiago/sipgogeneric	<1.4.3	1.4.3
github.com/emiago/sipgogo	<=1.4.2	1.4.3

Recommended response

Check inventory. Check lockfiles and deployed manifests for emiago/sipgo, github.com/emiago/sipgo.
Review the reported fix. Update emiago/sipgo to 1.4.3; github.com/emiago/sipgo to 1.4.3 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 22, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 22, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.