CVE-2026-59261: OpenClaw Credential Exposure via Dotenv Override (CVSS 7.1)

Technical summary

CVE-2026-59261 is a credential exposure flaw in OpenClaw affecting versions prior to 2026.5.28. The vulnerability involves improper handling of dotenv-format configuration files within workspace directories. These files can override provider credentials through environment variable shadowing, violating trust boundaries between low-privilege input paths and high-privilege credential storage. The attack vector is local (AV:L), requires no special privileges (PR:N), and depends on user interaction (UI:R) such as processing a file or triggering workspace initialization. The flaw maps to CWE-184 (Incomplete List of Disallowed Inputs) and CWE-522 (Insufficiently Protected Credentials), indicating inadequate filtering and weak credential protection mechanisms.

Business impact

Exposure of provider credentials can lead to unauthorized access to downstream services, data exfiltration, lateral movement within connected infrastructure, and potential compromise of API integrations. For organizations using OpenClaw to orchestrate workflows across multiple systems, credential theft could amplify blast radius across the entire integrated environment. Remediation delays increase risk of persistent unauthorized access and supply chain compromise if shared credentials are used across multiple projects or clients.

Affected systems

The vulnerability affects OpenClaw versions prior to 2026.5.28. Any deployment of OpenClaw that processes user-supplied input files or allows external file contributions to workspace directories is at risk. Environments where multiple users or automation systems share workspace directories face elevated exposure, as does any setup where input directories are less-tightly controlled than credential storage locations.

Exploitability

Exploitation requires local access to a system running vulnerable OpenClaw and the ability to place or modify dotenv configuration files in input paths monitored by the application. The attack is not remotely exploitable. User interaction is required—typically triggering a workflow execution or file processing operation. While the bar for initial access is moderate (local file placement), the reward (credential theft) is high, making this an attractive target for insider threats or post-compromise lateral movement scenarios. No known public exploits are tracked in the CISA KEV catalog.

Remediation

Organizations must upgrade OpenClaw to version 2026.5.28 or later. Pending patch deployment, restrict file write permissions on input directories to trusted users and processes only. Implement file integrity monitoring on workspace configuration directories. Rotate all credentials that may have been exposed through misconfigured or compromised dotenv files, and audit access logs for unusual dotenv file modifications or credential usage anomalies.

Patch guidance

Upgrade OpenClaw to version 2026.5.28 or newer. Consult the OpenClaw release notes and security advisory to confirm the patch addresses this specific credential-override mechanism. Test the upgrade in a staging environment to ensure compatibility with existing workspace configurations and that credential resolution behavior meets your security requirements post-patch.

Detection guidance

Monitor for unauthorized or unexpected dotenv file creation or modification in OpenClaw input and workspace directories. Alert on any dotenv files appearing in locations not managed by your build or deployment pipeline. Log and review environment variable overrides during workflow execution, particularly those affecting provider credentials. Check for unexpected credential usage patterns or failed authentication attempts using rotated credentials immediately after a suspected compromise window.

Why prioritize this

With a CVSS score of 7.1 (HIGH) and direct credential exposure potential, this vulnerability merits priority patching. Although it requires local access and user interaction, the value of exposed credentials and the likelihood of abuse in supply-chain or insider-threat scenarios justify rapid remediation. Organizations with shared workspace environments or those that frequently ingest untrusted input files should treat this as urgent.

Risk score, explained

The CVSS 3.1 score of 7.1 reflects high confidentiality impact (C:H) and high integrity impact (I:H) due to credential exposure and potential abuse, offset slightly by the requirement for local access and user interaction. The absence of availability impact (A:N) prevents a critical rating. The score appropriately captures the real-world risk: attackers with modest access foothold can steal high-value secrets, but exploitation is not autonomous or remote.

Frequently asked questions