Flyto2 Core: ${env.VAR} interpolation reads any env secret despite env.get being denylisted

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-67427
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-29 19:16:51 UTC
Updated2026-07-29 19:16:51 UTC
DescriptionFlyto2 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.

Risk And Classification

Primary CVSS: v3.1 8.6 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Problem Types: CWE-522 | CWE-668 | CWE-693 | CWE-522 CWE-522: Insufficiently Protected Credentials | CWE-668 CWE-668: Exposure of Resource to Wrong Sphere | CWE-693 CWE-693: Protection Mechanism Failure

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
3.1CNADECLARED8.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Flytohub Flyto-core affected < 2.26.6 Not specified

References

ReferenceSourceLinkTags
github.com/flytohub/flyto-core/security/advisories/GHSA-hr7p-wg7r-hg9m [email protected] github.com
github.com/flytohub/flyto-core/releases/tag/v2.26.6 [email protected] github.com
github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd17... [email protected] github.com
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