CVE-2026-59261: OpenClaw Credential Exposure Vulnerability

CVE-2026-59261 Overview

CVE-2026-59261 is a credential exposure vulnerability affecting OpenClaw versions before 2026.5.28. The flaw allows workspace .env (dotenv) files to override provider credentials configured at the trusted boundary. Attackers with lower-trust write access to configured input paths can inject their own environment variables, exposing sensitive data and credentials that should remain isolated. The issue is categorized under [CWE-184: Incomplete List of Disallowed Inputs].

Critical Impact
Attackers with local access to workspace input paths can override provider credentials via dotenv files, leading to disclosure of API keys, tokens, and other sensitive configuration data.

Affected Products

OpenClaw versions prior to 2026.5.28
Workspaces configured with user-writable input paths
Deployments relying on provider credentials for external services

Discovery Timeline

2026-07-08 - CVE-2026-59261 published to NVD
2026-07-09 - Last updated in NVD database

Technical Details for CVE-2026-59261

Vulnerability Analysis

OpenClaw loads configuration from provider-supplied credentials expected to remain within a trusted boundary. When a workspace contains a .env file, OpenClaw processes it and permits values inside that file to override the higher-trust provider credentials. This inversion of trust means workspace-level input controls settings that should only be defined by the operator.

An attacker who can write to a workspace input path places a crafted .env file that redefines credential variables. On the next load, OpenClaw applies the attacker-controlled values, causing outbound requests, tokens, or secret material to be handled under attacker control. The vulnerability is a local attack requiring user interaction, per the CVSS 4.0 vector.

Root Cause

The root cause is an incomplete disallowed inputs list [CWE-184]. OpenClaw does not exclude sensitive credential keys from the set of variables that workspace dotenv files may define. No precedence check enforces that higher-trust provider credentials cannot be shadowed by lower-trust workspace configuration.

Attack Vector

Exploitation requires the attacker to place or modify a .env file within a configured workspace input path. When OpenClaw next reads the workspace, the dotenv parser applies the attacker's variables into the running process environment, overwriting provider credentials. The result is credential exposure and hijacking of authenticated operations.

The vulnerability is described in prose only; no verified proof-of-concept code is published. See the GitHub Security Advisory and VulnCheck Advisory for the official technical description.

Detection Methods for CVE-2026-59261

Indicators of Compromise

Unexpected .env files present in OpenClaw workspace input paths not created by the operator
Modifications to dotenv files containing keys that mirror provider credential variable names
Outbound connections from OpenClaw to endpoints or accounts not matching operator-configured providers

Detection Strategies

Audit filesystem events for creation or modification of .env files under OpenClaw workspace directories
Compare in-process environment variables against expected provider-issued credentials at runtime
Alert on OpenClaw processes authenticating with credentials or account identifiers outside the approved allowlist

Monitoring Recommendations

Enable file integrity monitoring on all workspace directories consumed by OpenClaw
Log and review all workspace input path changes with attribution to the acting user
Correlate OpenClaw authentication events with the operator's known credential inventory

How to Mitigate CVE-2026-59261

Immediate Actions Required

Upgrade OpenClaw to version 2026.5.28 or later
Rotate all provider credentials that OpenClaw has referenced since deployment
Remove untrusted .env files from all workspace input paths and restrict write permissions to trusted operators

Patch Information

The fix is available in OpenClaw 2026.5.28. Refer to the GitHub Security Advisory GHSA-4pqj-3c56-5fqq for release notes and remediation guidance from the maintainers.

Workarounds

Restrict workspace input path permissions so only trusted administrators can write dotenv files
Remove or block .env files from workspaces until the patched version is deployed
Separate credential configuration to a directory outside any user-writable workspace path

bash

# Restrict workspace write access and remove untrusted dotenv files
find /path/to/openclaw/workspaces -name '.env' -type f -exec ls -l {} \;
chmod 750 /path/to/openclaw/workspaces
chown -R openclaw-admin:openclaw /path/to/openclaw/workspaces