CVE-2026-7734: Github.com/osrg/gobgp/v4 Remote Code Execution Vulnerability

MODERATE
Advisory Identifier: GHSA-vm3g-8xwv-mxfp
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CVSS 5.3
CWE-404
Published
Advisory Summary

CVE-2026-7734 is a MODERATE (CVSS 5.3) remote code execution vulnerability (CWE-404: Improper Resource Shutdown or Release) affecting Github.com/osrg/gobgp/v4 libraries in the Go ecosystem. The issue involves gobgp has an improper resource shutdown or release. Remediation is available by upgrading affected packages to version 4.4.0.

CVE-2026-7734 at a Glance

CVE Identifier CVE-2026-7734
GHSA Identifier GHSA-vm3g-8xwv-mxfp
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-404: Improper Resource Shutdown or Release
Affected Product Github.com/osrg/gobgp/v4
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability Low (A:L)

How to Fix CVE-2026-7734

To remediate this vulnerability, upgrade all affected Github.com/osrg/gobgp/v4 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/osrg/gobgp/v4 fixed: 4.4.0 
Upgrade github.com/osrg/gobgp/v4 to 4.4.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/osrg/gobgp/v4

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-7734, inspect your project dependencies for Github.com/osrg/gobgp/v4:

inspect dependencies for github.com/osrg/gobgp/v4

Analyze the terminal output to locate any version of Github.com/osrg/gobgp/v4 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.4.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-404: Improper Resource Shutdown or Release, where the product does not release or incorrectly releases a resource before it is made available for re-use. In Github.com/osrg/gobgp/v4, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A vulnerability has been found in osrg GoBGP up to 4.3.0. This impacts the function SRv6L3ServiceAttribute.DecodeFromBytes of the file pkg/packet/bgp/prefix_sid.go of the component SRv6 L3 Service. Such manipulation of the argument data leads to denial of service. The attack may be performed from remote. Upgrading to version 4.4.0 will fix this issue. The name of the patch is f9f7b55ec258e514be0264871fa645a2c3edad11. Users should upgrade the affected component.

CVE-2026-7734 Affected Github.com/osrg/gobgp/v4 Versions

1 component(s)
Fixed Versions:
4.4.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/osrg/gobgp/v4
golang/github.com/osrg/gobgp/v4
Go
< 4.4.0
4.4.0

References

NVD — CVE-2026-7734 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-7734
Security Fix Commit FIX COMMIT
https://github.com/osrg/gobgp/commit/f9f7b55ec258e514be0264871fa645a2c3edad11
Github.com/osrg/gobgp/v4 Source Repository REPOSITORY
https://github.com/osrg/gobgp
Github.com/osrg/gobgp/v4 Release RELEASE
https://github.com/osrg/gobgp/releases/tag/v4.4.0
vuldb.com/submit/807581 WEB
https://vuldb.com/submit/807581
vuldb.com/vuln/360909 WEB
https://vuldb.com/vuln/360909
vuldb.com/vuln/360909/cti WEB
https://vuldb.com/vuln/360909/cti

Frequently Asked Questions

What is CVE-2026-7734?
CVE-2026-7734 is a security vulnerability in Github.com/osrg/gobgp/v4 involving GoBGP has an Improper Resource Shutdown or Release under CWE-404: Improper Resource Shutdown or Release.
Which Github.com/osrg/gobgp/v4 versions are affected?
Affected versions include releases prior to 4.4.0 across affected packages: github.com/osrg/gobgp/v4.
What version fixes CVE-2026-7734?
Upgrading to 4.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/osrg/gobgp/v4 affected?
Yes, github.com/osrg/gobgp/v4 is affected in releases prior to 4.4.0. Upgrade your dependency to 4.4.0 or later.
What is the CVSS score of CVE-2026-7734?
CVE-2026-7734 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2026-7734?
CVE-2026-7734 is classified under CWE-404: Improper Resource Shutdown or Release (The product does not release or incorrectly releases a resource before it is made available for re-use.).
How can I check Go dependencies for CVE-2026-7734?
Run the dependency tree command: 'inspect dependencies for github.com/osrg/gobgp/v4'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vm3g-8xwv-mxfp",
  "modified" : "2026-05-08T16:51:50Z",
  "published" : "2026-05-04T06:32:02Z",
  "aliases" : [ "CVE-2026-7734" ],
  "summary" : "GoBGP has an Improper Resource Shutdown or Release",
  "details" : "A vulnerability has been found in osrg GoBGP up to 4.3.0. This impacts the function SRv6L3ServiceAttribute.DecodeFromBytes of the file pkg/packet/bgp/prefix_sid.go of the component SRv6 L3 Service. Such manipulation of the argument data leads to denial of service. The attack may be performed from remote. Upgrading to version 4.4.0 will fix this issue. The name of the patch is f9f7b55ec258e514be0264871fa645a2c3edad11. Users should upgrade the affected component.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/osrg/gobgp/v4"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-7734"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/osrg/gobgp/commit/f9f7b55ec258e514be0264871fa645a2c3edad11"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/osrg/gobgp"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/osrg/gobgp/releases/tag/v4.4.0"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/807581"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/360909"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/360909/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-404" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-08T16:51:50Z",
    "nvd_published_at" : "2026-05-04T06:16:02Z"
  }
}