CVE-2026-27004: Openclaw OpenClaw Session Tool Visibility Hardening Vulnerability
MODERATECVE-2026-27004 is a MODERATE openclaw session tool visibility hardening vulnerability (CWE-209: Generation of Error Message Containing Sensitive Information) affecting Openclaw libraries in the npm ecosystem. The issue involves openclaw session tool visibility hardening and telegram webhook secret fallback. Remediation is available by upgrading affected packages to version 2026.2.15.
CVE-2026-27004 at a Glance
How to Fix CVE-2026-27004
To remediate this vulnerability, upgrade all affected Openclaw dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install openclaw@2026.2.15Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls openclawHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-27004, inspect your project dependencies using npm:
npm ls openclawAnalyze the terminal output to locate any version of Openclaw in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2026.2.15), your application is affected.
Note: The npm ls openclaw command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-209: Generation of Error Message Containing Sensitive Information, where the product generates an error message that includes sensitive information about its environment, users, or associated data. In Openclaw, 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
CVE-2026-27004 Affected Openclaw Versions
1 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
openclaw
|
npm |
< 2026.2.15
|
2026.2.15
|
References
Frequently Asked Questions
What is CVE-2026-27004?
Which Openclaw versions are affected?
What version fixes CVE-2026-27004?
Is openclaw affected?
What CWE is associated with CVE-2026-27004?
How can I check npm dependencies for CVE-2026-27004?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-6hf3-mhgc-cm65",
"modified" : "2026-02-20T16:47:17Z",
"published" : "2026-02-18T22:43:53Z",
"aliases" : [ "CVE-2026-27004" ],
"summary" : "OpenClaw session tool visibility hardening and Telegram webhook secret fallback",
"details" : "## Vulnerability\n\nIn some shared-agent deployments, OpenClaw session tools (`sessions_list`, `sessions_history`, `sessions_send`) allowed broader session targeting than some operators intended. This is primarily a configuration/visibility-scoping issue in multi-user environments where peers are not equally trusted.\n\nIn Telegram webhook mode, monitor startup also did not fall back to per-account `webhookSecret` when only the account-level secret was configured.\n\n## Typical Use Case Context\n\nMost regular OpenClaw deployments run a single agent, or run in trusted environments. In those setups, practical risk from this issue is generally low.\n\n## Impact\n\n- Shared-agent, multi-user, less-trusted environments: session-tool access could expose transcript content across peer sessions.\n- Single-agent or trusted environments: practical impact is limited.\n- Telegram webhook mode: account-level secret wiring could be missed unless an explicit monitor webhook secret override was provided.\n\n## Affected Packages / Versions\n\n- Package: npm `openclaw`\n- Affected versions: `<= 2026.2.14`\n- Patched version: `2026.2.15` (planned next release)\n\n## Remediation\n\n- Add and enforce `tools.sessions.visibility` (`self | tree | agent | all`) across session tools, defaulting to `tree`.\n- Keep sandbox clamping behavior so sandboxed runs can be restricted to spawned/session-tree visibility.\n- Resolve Telegram webhook secret from account config fallback in monitor webhook startup.\n\n## Fix Commit(s)\n\n- `c6c53437f7da033b94a01d492e904974e7bda74c`\n\nThanks @aether-ai-agent for reporting.",
"severity" : [ {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "openclaw"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "2026.2.15"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/security/advisories/GHSA-6hf3-mhgc-cm65"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-27004"
}, {
"type" : "WEB",
"url" : "https://github.com/openclaw/openclaw/commit/c6c53437f7da033b94a01d492e904974e7bda74c"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/openclaw/openclaw"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-209", "CWE-346" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-02-18T22:43:53Z",
"nvd_published_at" : "2026-02-20T00:16:17Z"
}
}