Vulnerabilities in pkg:golang/github.com/babylonlabs-io/babylon

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Advisory Summary

GHSA-m6wq-66p2-c8pc is a HIGH babylon nil blockhash vulnerability (CWE-476: NULL Pointer Dereference) affecting Github.com/babylonlabs io/babylon/v4 libraries in the Go ecosystem. The issue involves babylon nil blockhash in bls vote extensions triggers panics in consensus handlers. Remediation is available by upgrading affected packages to version 4.2.0.

5 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:golang/github.com/babylonlabs-io/babylon

5 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:golang/github.com/babylonlabs-io/babylon. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-m6wq-66p2-c8pc - HIGH Babylon Nil BlockHash in BLS vote extensions triggers panics in consensus handlers
GHSA-4rmq-mc2c-r495 - MODERATE Babylon Incorrect FP inactive accounting in costaking creates “phantom stake” that earns rewards after BTC unbond
GHSA-7mm3-vfg8-7rg6 - HIGH Babylon Finality Provider `MsgCommitPubRandList` replay attack
GHSA-56j4-446m-qrf6 - HIGH Babylon vulnerable to chain half when transaction has fees different than `ubbn`
GHSA-869w-47c6-fq8q - HIGH Babylon Integer Overflow in Distribution Module CumulativeRewardRatio Calculation Leading to Chain Halt

GHSA-m6wq-66p2-c8pc at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-m6wq-66p2-c8pc
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-476: NULL Pointer Dereference
Affected Product Github.com/babylonlabs io/babylon/v4
Package Ecosystem Go
Published Date
Last Updated

How to Fix GHSA-m6wq-66p2-c8pc

To remediate this vulnerability, upgrade all affected Github.com/babylonlabs io/babylon/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/babylonlabs-io/babylon/v4 fixed: 4.2.0 
Upgrade github.com/babylonlabs-io/babylon/v4 to 4.2.0
github.com/babylonlabs-io/babylon/v3 fixed: Latest secure release 
Upgrade github.com/babylonlabs-io/babylon/v3 to Latest secure release
github.com/babylonlabs-io/babylon/v2 fixed: Latest secure release 
Upgrade github.com/babylonlabs-io/babylon/v2 to Latest secure release
github.com/babylonlabs-io/babylon fixed: Latest secure release 
Upgrade github.com/babylonlabs-io/babylon to Latest secure release
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/babylonlabs-io/babylon/v4

How to Check if You Are Affected

To determine whether your application is affected by GHSA-m6wq-66p2-c8pc, inspect your project dependencies for Github.com/babylonlabs io/babylon/v4:

inspect dependencies for github.com/babylonlabs-io/babylon/v4

Analyze the terminal output to locate any version of Github.com/babylonlabs io/babylon/v4 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.2.0), 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. In Github.com/babylonlabs io/babylon/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

### Summary A vulnerability exists in Babylon’s BLS vote extension processing where a malicious active validator can submit a VoteExtension with the `block_hash` field omitted from the protobuf serialization. Because protobuf fields are optional, unmarshalling succeeds but leaves `BlockHash` as nil. Babylon then dereferences this nil pointer in consensus-critical code paths (notably `VerifyVoteExtension`, and also proposal-time vote verification), causing a runtime panic. ### Impact Intermittent validator crashes at epoch boundaries, which would slow down the creation of the epoch boundary block. ### Finder Vulnerability discovered by: - @GrumpyLaurie55348

GHSA-m6wq-66p2-c8pc Affected Github.com/babylonlabs io/babylon/v4 Versions

4 component(s)
Fixed Versions:
4.2.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/babylonlabs-io/babylon/v4
golang/github.com/babylonlabs-io/babylon/v4
Go
< 4.2.0
4.2.0
github.com/babylonlabs-io/babylon/v3
golang/github.com/babylonlabs-io/babylon/v3
Go
≤ 3.0.0-snapshot.250805a
github.com/babylonlabs-io/babylon/v2
golang/github.com/babylonlabs-io/babylon/v2
Go
≤ 2.3.2
github.com/babylonlabs-io/babylon
golang/github.com/babylonlabs-io/babylon
Go
≤ 1.1.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/babylonlabs-io/babylon/security/advisories/GHSA-m6wq-66p2-c8pc
Security Fix Commit FIX COMMIT
https://github.com/babylonlabs-io/babylon/commit/f79ad58c1d5bcab3451cb7a47c91e713935917d7
Github.com/babylonlabs io/babylon/v4 Source Repository REPOSITORY
https://github.com/babylonlabs-io/babylon

Frequently Asked Questions

What is GHSA-m6wq-66p2-c8pc?
GHSA-m6wq-66p2-c8pc is a security vulnerability in Github.com/babylonlabs io/babylon/v4 involving Babylon Nil BlockHash in BLS vote extensions triggers panics in consensus handlers under CWE-476: NULL Pointer Dereference.
Which Github.com/babylonlabs io/babylon/v4 versions are affected?
Affected versions include releases prior to 4.2.0 across affected packages: github.com/babylonlabs-io/babylon/v4, github.com/babylonlabs-io/babylon/v3, github.com/babylonlabs-io/babylon/v2, github.com/babylonlabs-io/babylon.
What version fixes GHSA-m6wq-66p2-c8pc?
Upgrading to 4.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/babylonlabs-io/babylon/v4 affected?
Yes, github.com/babylonlabs-io/babylon/v4 is affected in releases prior to 4.2.0. Upgrade your dependency to 4.2.0 or later.
Is github.com/babylonlabs-io/babylon/v3 affected?
Yes, github.com/babylonlabs-io/babylon/v3 is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with GHSA-m6wq-66p2-c8pc?
GHSA-m6wq-66p2-c8pc is classified under CWE-476: NULL Pointer Dereference (The product dereferences a pointer that it expects to be valid but is NULL.).
How can I check Go dependencies for GHSA-m6wq-66p2-c8pc?
Run the dependency tree command: 'inspect dependencies for github.com/babylonlabs-io/babylon/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-m6wq-66p2-c8pc",
  "modified" : "2025-12-17T01:09:11Z",
  "published" : "2025-12-08T22:20:24Z",
  "aliases" : [ ],
  "summary" : "Babylon Nil BlockHash in BLS vote extensions triggers panics in consensus handlers",
  "details" : "### Summary\n\nA vulnerability exists in Babylon’s BLS vote extension processing where a malicious active validator can submit a VoteExtension with the `block_hash` field omitted from the protobuf serialization. Because protobuf fields are optional, unmarshalling succeeds but leaves `BlockHash` as nil. Babylon then dereferences this nil pointer in consensus-critical code paths (notably `VerifyVoteExtension`, and also proposal-time vote verification), causing a runtime panic.\n\n### Impact\n\nIntermittent validator crashes at epoch boundaries, which would slow down the creation of the epoch boundary block.\n\n### Finder \n\nVulnerability discovered by:\n\n- @GrumpyLaurie55348",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/babylonlabs-io/babylon/v4"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.2.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/babylonlabs-io/babylon/v3"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "3.0.0-snapshot.250805a"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/babylonlabs-io/babylon/v2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.3.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/babylonlabs-io/babylon"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/babylonlabs-io/babylon/security/advisories/GHSA-m6wq-66p2-c8pc"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/babylonlabs-io/babylon/commit/f79ad58c1d5bcab3451cb7a47c91e713935917d7"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/babylonlabs-io/babylon"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-08T22:20:24Z",
    "nvd_published_at" : null
  }
}