Read the docs
TI-2026-04474 Aliases CVE-2026-5124GHSA-688c-h9c2-ffwg

osrg GoBGP BGP Header bgp.go BGPHeader.DecodeFromBytes access control

Priority LOW 28CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
None · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-284.

Summary

A security vulnerability has been detected in osrg GoBGP up to 4.3.0. Affected is the function BGPHeader.DecodeFromBytes of the file pkg/packet/bgp/bgp.go of the component BGP Header Handler. The manipulation leads to improper access controls. Remote exploitation of the attack is possible. The attack is considered to have high complexity. The exploitability is told to be difficult. The identifier of the patch is f0f24a2a901cbf159260698211ab15c583ced131. To fix this issue, it is recommended to deploy a patch.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00298 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
osrgGoBGP4.0; 4.1; 4.2; 4.3.0—No fix listedCNA
  • GoBGP Vendorosrg Affected 4.0; 4.1; 4.2; 4.3.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:osrg:gobgp:*:*:*:*:*:*:*:*before 4.4.0Vulnerableosrg
  • cpe:2.3:a:osrg:gobgp:*:*:*:*:*:*:*:* Versions before 4.4.0 Vulnerable ·osrg

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-5124
  2. 2026-10-03 Alias added: GHSA-688c-h9c2-ffwg

References

Patch 2

Other 1

  • TI-2026-30596 GoBGP: Panic in AdjRib.Update via malformed BGP Update message (Nil Pointer Dereference) CVSS 3.1HIGH 7.5
  • TI-2026-30162 GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4ByteAs via Malformed BGP UPDATE CVSS 3.1HIGH 7.5
  • TI-2026-30161 GoBGP: Remote Denial of Service (Panic) via Malformed Well-known Path Attribute CVSS 3.1HIGH 7.5
  • TI-2026-23526 An issue in GoBGP gobgpd v.4.2.0 allows a remote attacker to cause a denial of service via the NEXT_HOP path attribute CVSS 3.1HIGH 7.5
  • TI-2025-28529 An issue was discovered in GoBGP before 3.35.0. CVSS 3.1HIGH 8.6
  • TI-2025-28531 An issue was discovered in GoBGP before 3.35.0. CVSS 3.1CRITICAL 9.8
See all 15 →

Sources

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