Vulnerabilities in pkg:golang/github.com/osrg/gobgp/v3

PACKAGE
Advisory Identifier: GHSA-7m35-vw2c-696v
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Advisory Summary

CVE-2025-43971 is a HIGH (CVSS 8.6) gobgp panics due to a vulnerability (CWE-193: Off-by-one Error) affecting Github.com/osrg/gobgp/v3 libraries in the Go ecosystem. The issue involves gobgp panics due to a zero value for softwareversionlen. Remediation is available by upgrading affected packages to version 3.35.0.

5 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:golang/github.com/osrg/gobgp/v3

5 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:golang/github.com/osrg/gobgp/v3. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-7m35-vw2c-696v CVE-2025-43971 HIGH GoBGP panics due to a zero value for softwareVersionLen
GHSA-c5jg-wr5v-2wp2 CVE-2025-43973 MODERATE GoBGP does not verify that the input length
GHSA-mfvv-mgf6-q25r CVE-2025-43972 MODERATE GoBGP crashes in the flowspec parser
GHSA-hqhq-hp5x-xp3w CVE-2025-43970 MODERATE GoBGP does not properly check the input length
GHSA-6rqv-5cg7-m4x3 CVE-2023-46565 HIGH Buffer Overflow vulnerability in osrg gobgp

CVE-2025-43971 at a Glance

CVE Identifier CVE-2025-43971
GHSA Identifier GHSA-7m35-vw2c-696v
Severity HIGH
CVSS v3.1 Base Score 8.6
CWE Classification CWE-193: Off-by-one Error
Affected Product Github.com/osrg/gobgp/v3
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 8.6

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:C/C:N/I:N/A:H).

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

How to Fix CVE-2025-43971

To remediate this vulnerability, upgrade all affected Github.com/osrg/gobgp/v3 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/v3 fixed: 3.35.0 
Upgrade github.com/osrg/gobgp/v3 to 3.35.0
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/v3

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-43971, inspect your project dependencies for Github.com/osrg/gobgp/v3:

inspect dependencies for github.com/osrg/gobgp/v3

Analyze the terminal output to locate any version of Github.com/osrg/gobgp/v3 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.35.0), 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-193: Off-by-one Error, where a product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value. In Github.com/osrg/gobgp/v3, 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

An issue was discovered in GoBGP before 3.35.0 (introduced in v3.11.0). pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.

CVE-2025-43971 Affected Github.com/osrg/gobgp/v3 Versions

1 component(s)
Fixed Versions:
3.35.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/osrg/gobgp/v3
golang/github.com/osrg/gobgp/v3
Go
≥ 3.11.0
< 3.35.0
3.35.0

References

NVD — CVE-2025-43971 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-43971
Security Fix Commit FIX COMMIT
https://github.com/osrg/gobgp/commit/08a001e06d90e8bcc190084c66992f46f62c0986
Github.com/osrg/gobgp/v3 Source Repository REPOSITORY
https://github.com/osrg/gobgp
Github.com/osrg/gobgp/v3 Source Repository REPOSITORY
https://github.com/osrg/gobgp/compare/v3.34.0...v3.35.0
Github.com/osrg/gobgp/v3 Security Information SECURITY
https://security-tracker.debian.org/tracker/CVE-2025-43971

Frequently Asked Questions

What is CVE-2025-43971?
CVE-2025-43971 is a security vulnerability in Github.com/osrg/gobgp/v3 involving GoBGP panics due to a zero value for softwareVersionLen under CWE-193: Off-by-one Error.
Which Github.com/osrg/gobgp/v3 versions are affected?
Affected versions include releases prior to 3.35.0 across affected packages: github.com/osrg/gobgp/v3.
What version fixes CVE-2025-43971?
Upgrading to 3.35.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/osrg/gobgp/v3 affected?
Yes, github.com/osrg/gobgp/v3 is affected in releases prior to 3.35.0. Upgrade your dependency to 3.35.0 or later.
What is the CVSS score of CVE-2025-43971?
CVE-2025-43971 has a CVSS v3.1 base score of 8.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
What CWE is associated with CVE-2025-43971?
CVE-2025-43971 is classified under CWE-193: Off-by-one Error (A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.).
How can I check Go dependencies for CVE-2025-43971?
Run the dependency tree command: 'inspect dependencies for github.com/osrg/gobgp/v3'. 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-7m35-vw2c-696v",
  "modified" : "2026-03-12T17:22:08Z",
  "published" : "2025-04-21T03:30:18Z",
  "aliases" : [ "CVE-2025-43971" ],
  "summary" : "GoBGP panics due to a zero value for softwareVersionLen",
  "details" : "An issue was discovered in GoBGP before 3.35.0 (introduced in v3.11.0). pkg/packet/bgp/bgp.go allows attackers to cause a panic via a zero value for softwareVersionLen.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/osrg/gobgp/v3"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.11.0"
      }, {
        "fixed" : "3.35.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-43971"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/osrg/gobgp/commit/08a001e06d90e8bcc190084c66992f46f62c0986"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/osrg/gobgp"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/osrg/gobgp/compare/v3.34.0...v3.35.0"
  }, {
    "type" : "WEB",
    "url" : "https://security-tracker.debian.org/tracker/CVE-2025-43971"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-193" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-04-21T21:55:26Z",
    "nvd_published_at" : "2025-04-21T01:15:45Z"
  }
}