CVE-2026-8634: Crabbox Environment Variable Exposure Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-fm77-94qm-4894
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CVSS 9.1
CWE-94
Published
Advisory Summary

CVE-2026-8634 is a CRITICAL (CVSS 9.1) environment variable exposure vulnerability vulnerability (CWE-94: Improper Control of Generation of Code ('Code Injection')) affecting Crabbox libraries in the Go ecosystem. The issue involves environment variable exposure vulnerability. Remediation is available by upgrading affected packages to version 0.12.0.

CVE-2026-8634 at a Glance

CVE Identifier CVE-2026-8634
GHSA Identifier GHSA-fm77-94qm-4894
Severity CRITICAL
CVSS v3.1 Base Score 9.1
CWE Classification CWE-94: Improper Control of Generation of Code ('Code Injection')
Affected Product Crabbox
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 9.1

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

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 High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2026-8634

To remediate this vulnerability, upgrade all affected Crabbox 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/openclaw/crabbox fixed: 0.12.0 
Upgrade github.com/openclaw/crabbox to 0.12.0
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/openclaw/crabbox

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-8634, inspect your project dependencies for Crabbox:

inspect dependencies for github.com/openclaw/crabbox

Analyze the terminal output to locate any version of Crabbox in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.12.0), 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-94: Improper Control of Generation of Code ('Code Injection'), where the product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. In Crabbox, 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

Crabbox prior to v0.12.0 contains an environment variable exposure vulnerability that allows attackers with access to a malicious or compromised repository to forward local secrets such as API tokens, cloud credentials, and broker tokens into the remote command environment. Attackers can exploit overly permissive environment variable allowlisting in repo-local Crabbox configuration to serialize sensitive environment variables into remote command execution, exposing credentials to the remote environment.

CVE-2026-8634 Affected Crabbox Versions

1 component(s)
Fixed Versions:
0.12.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/openclaw/crabbox
golang/github.com/openclaw/crabbox
Go
< 0.12.0
0.12.0

References

NVD — CVE-2026-8634 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8634
Crabbox Source Repository REPOSITORY
https://github.com/openclaw/crabbox/pull/78
Security Fix Commit FIX COMMIT
https://github.com/openclaw/crabbox/commit/eaae40ae4ce009e60633f16f7f19600c74557f6f
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-fm77-94qm-4894
Crabbox Source Repository REPOSITORY
https://github.com/openclaw/crabbox
Crabbox Release RELEASE
https://github.com/openclaw/crabbox/releases/tag/v0.12.0
www.vulncheck.com/advisories/crabbox-... WEB
https://www.vulncheck.com/advisories/crabbox-environment-variable-information-disclosure

Frequently Asked Questions

What is CVE-2026-8634?
CVE-2026-8634 is a security vulnerability in Crabbox involving environment variable exposure vulnerability under CWE-94: Improper Control of Generation of Code ('Code Injection').
Which Crabbox versions are affected?
Affected versions include releases prior to 0.12.0 across affected packages: github.com/openclaw/crabbox.
What version fixes CVE-2026-8634?
Upgrading to 0.12.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/openclaw/crabbox affected?
Yes, github.com/openclaw/crabbox is affected in releases prior to 0.12.0. Upgrade your dependency to 0.12.0 or later.
What is the CVSS score of CVE-2026-8634?
CVE-2026-8634 has a CVSS v3.1 base score of 9.1 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-8634?
CVE-2026-8634 is classified under CWE-94: Improper Control of Generation of Code ('Code Injection') (The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.).
How can I check Go dependencies for CVE-2026-8634?
Run the dependency tree command: 'inspect dependencies for github.com/openclaw/crabbox'. 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-fm77-94qm-4894",
  "modified" : "2026-07-21T14:40:27Z",
  "published" : "2026-05-14T21:30:47Z",
  "aliases" : [ "CVE-2026-8634" ],
  "summary" : "Crabbox: environment variable exposure vulnerability",
  "details" : "Crabbox prior to v0.12.0 contains an environment variable exposure vulnerability that allows attackers with access to a malicious or compromised repository to forward local secrets such as API tokens, cloud credentials, and broker tokens into the remote command environment. Attackers can exploit overly permissive environment variable allowlisting in repo-local Crabbox configuration to serialize sensitive environment variables into remote command execution, exposing credentials to the remote environment.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/openclaw/crabbox"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.12.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-8634"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/crabbox/pull/78"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/crabbox/commit/eaae40ae4ce009e60633f16f7f19600c74557f6f"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-fm77-94qm-4894"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/openclaw/crabbox"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/openclaw/crabbox/releases/tag/v0.12.0"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/crabbox-environment-variable-information-disclosure"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-21T19:29:23Z",
    "nvd_published_at" : "2026-05-14T20:17:21Z"
  }
}