Protection Mechanism Failure Affecting flyto-core package, versions [,2.26.7)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-FLYTOCORE-18507981
- published2 Aug 2026
- disclosed30 Jul 2026
- creditUnknown
Introduced: 30 Jul 2026
NewCVE-2026-67427 (opens in a new tab)How to fix?
Upgrade flyto-core to version 2.26.7 or higher.
Overview
flyto-core is an A workflow engine with 412 built-in modules. Trace every step. Replay from any point.
Affected versions of this package are vulnerable to Protection Mechanism Failure in the variable resolution process. An attacker can access sensitive environment variables by injecting ${env.VAR} expressions into workflow parameters or step values, which are then resolved without policy checks or allowlists. This allows exfiltration of secrets such as API keys or tokens by embedding them into outbound requests handled by permitted modules.