high8.6
CVE-2026-67427
Flyto2 Core: ${env.VAR} interpolation reads any env secret despite env.get being denylisted
Impact
Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, the workflow engine variable resolver expands ${env.VAR} for any host environment variable without an allowlist or capability policy check, allowing a workflow parameter to bypass the default capability policy denylist for env.get and env.load_dotenv and exfiltrate secrets through allowed modules. This issue is fixed in version 2.26.6.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | flyto-core | < 2.26.7 | 2.26.7 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-hr7p-wg7r-hg9m
- https://github.com/flytohub/flyto-core/security/advisories/GHSA-hr7p-wg7r-hg9m
- https://nvd.nist.gov/vuln/detail/CVE-2026-67427
- https://github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd173cc8cc
- https://github.com/flytohub/flyto-core/releases/tag/v2.26.6