CVE-2026-44999: OpenClaw < 2026.4.20 - Improper Trust Labeling in Isolated Cron Awareness Events

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-11 · updated 2026-06-17
Weakness: CWE-345

Description

OpenClaw before 2026.4.20 fails to properly preserve untrusted labels for isolated cron awareness events, allowing webhook-triggered cron agent output to be recorded as trusted system events. Attackers can exploit this trust-labeling issue to strengthen prompt-injection attacks by rendering untrusted events as trusted System events.

Affected products

OpenClaw: before 2026.4.20 — fixed in 2026.4.20

How to fix

Upgrade to a fixed version: OpenClaw 2026.4.20. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/f61896b03cc7031f51106a04566831f4ac2a0bd7
https://github.com/openclaw/openclaw/security/advisories/GHSA-57r2-h2wj-g887
https://www.vulncheck.com/advisories/openclaw-improper-trust-labeling-in-isolated-cron-awareness-events

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