CVE-2026-67427CWE-522CWE-668CWE-693

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

High · published July 29, 2026

CVSS v3.1
8.6
EPSS
1%
Percentile
47.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00590 · 47.5th percentile
Weaknesses
CWE-522 · Insufficiently Protected Credentials; CWE-668 · Exposure of Resource to Wrong Sphere; CWE-693 · Protection Mechanism Failure
Published
2026-07-29T18:45Z
EPSS history
Timeline
  • 29 JUL 18:45Z
    Flyto2 Core: ${env.VAR} interpolation reads any env secret despite env.get being denylisted
    cvelistv5