Read the docs
TI-2026-41959 Aliases CVE-2026-58268GHSA-pg59-5vwg-4jxq

SIPGO: DoS via unvalidated Content-Length in the stream parser

Priority MEDIUM 40CWE-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 1.4.1, ParserStream.parseSingle in sip/parser_stream.go allocates a SIP body buffer from the client-controlled Content-Length header before ParseMaxMessageLength is enforced. An unauthenticated peer can send a stream-transport message over TCP, TLS, WS, or WSS with an oversized declared length, causing excessive memory allocation and denial of service before the body is read. This issue is fixed in version 1.4.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00609 49th percentileScored 2026-11-07
Fix Fixed sipgo (emiago): 1.4.1github.com/emiago/sipgo (Go): 1.4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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 1.4.11.4.1Patch availableCNA
—github.com/emiago/sipgo (Go)before 1.4.11.4.1Patch availableGHSA-pg59-5vwg-4jxq
  • sipgo Vendoremiago Affected before 1.4.1 Fixed in 1.4.1 Patch available CNA
  • github.com/emiago/sipgo (Go) Vendor— Affected before 1.4.1 Fixed in 1.4.1 Patch available GHSA-pg59-5vwg-4jxq

Remediation

  • Fix · CNA sipgo (emiago) Fixed in 1.4.1
  • Fix · GHSA-pg59-5vwg-4jxq github.com/emiago/sipgo (Go) Fixed in 1.4.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58268
  2. 2026-10-03 Alias added: GHSA-pg59-5vwg-4jxq

References

Other 4

  • TI-2025-41850 SIPGO library has response DoS vulnerability via nil pointer dereference CVSS 4.0HIGH 8.7
  • TI-2026-53968 SIPGO: DoS via unvalidated WebSocket frame length CVSS 3.1HIGH 7.5

Sources

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