CVE-2026-67427
HIGHFlyto2 Core: ${env.VAR} interpolation reads any env secret despite env.get being denylisted
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/flytohub/flyto-core/security/advisories/GHSA-hr7p-wg7r-hg9m
X_Refsource_Misc x_refsource_misc
https://github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd173cc8cc
X_Refsource_Misc x_refsource_misc
https://github.com/flytohub/flyto-core/releases/tag/v2.26.6
Scores
CVSS v3
8.6
EPSS
0.0034
EPSS Percentile
26.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-522
CWE-668
CWE-693
Status
published
Products (2)
flytohub/flyto-core
< 2.26.6
pypi/flyto-core
0 - 2.26.7PyPI
Published
Jul 29, 2026
Tracked Since
Jul 30, 2026