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TI-2026-53968 Aliases CVE-2026-77322GHSA-8h6x-h86x-75wh

SIPGO: DoS via unvalidated WebSocket frame length

Priority HIGH 72CWE-789Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-789.

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 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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00609 49th percentileScored 2026-11-07
Fix Fixed sipgo (emiago): 1.4.3github.com/emiago/sipgo (Go): 1.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
emiagosipgobefore 1.4.31.4.3Patch availableCNA
—github.com/emiago/sipgo (Go)before 1.4.31.4.3Patch availableGHSA-8h6x-h86x-75wh
  • sipgo Vendoremiago Affected before 1.4.3 Fixed in 1.4.3 Patch available CNA
  • github.com/emiago/sipgo (Go) Vendor— Affected before 1.4.3 Fixed in 1.4.3 Patch available GHSA-8h6x-h86x-75wh

Remediation

  • Fix · CNA sipgo (emiago) Fixed in 1.4.3
  • Fix · GHSA-8h6x-h86x-75wh github.com/emiago/sipgo (Go) Fixed in 1.4.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-77322
  2. 2026-10-03 Alias added: GHSA-8h6x-h86x-75wh

References

Other 4

  • TI-2025-41850 SIPGO library has response DoS vulnerability via nil pointer dereference CVSS 4.0HIGH 8.7
  • TI-2026-41959 SIPGO: DoS via unvalidated Content-Length in the stream parser CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences