What is CVE-2026-27004?

CVE-2026-27004 is a medium-severity vulnerability in Openclaw, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.5/10. Published 2026-02-20.

How severe is CVE-2026-27004?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Information disclosure in Openclaw

CVE-2026-27004

OpenClaw is a personal AI assistant. Prior to version 2026.2.15, in 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. In Telegram webhook mode, monitor startup also did not fall back to per-account `webhookSecret` when only the account-level secret was configured. In shared-agent, multi-user, less-trusted environments: session-tool access could expose transcript content across peer sessions. In single-agent or trusted environments, practical impact is limited. In Telegram webhook mode, account-level secret wiring could be missed unless an explicit monitor webhook secret override was provided. Version 2026.2.15 fixes the issue.

EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Openclaw — versions < 2026.2.15

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-27004?: CVE-2026-27004 is a medium-severity vulnerability in Openclaw, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 5.5/10. Published 2026-02-20.
How severe is CVE-2026-27004?: Medium severity. CVSS v3 base score is 5.5 out of 10.