CVE-2026-67427: CWE-522: Insufficiently Protected Credentials in flytohub flyto-core
CVE-2026-67427 is a high-severity vulnerability in flytohub's flyto-core workflow engine prior to version 2.26.6. The engine's variable resolver expands environment variables (${env.VAR}) without enforcing an allowlist or capability policy check, enabling workflows to bypass default denylist protections and potentially exfiltrate secrets. This issue is fixed in version 2.26.6.
AI Analysis
Technical Summary
The flyto-core workflow engine prior to version 2.26.6 allows unfiltered expansion of environment variables via the variable resolver syntax ${env.VAR}. This behavior bypasses the default capability policy denylist for environment variable access methods such as env.get and env.load_dotenv, which can lead to insufficient protection of credentials and secret data. The vulnerability is classified under CWE-522 (Insufficiently Protected Credentials) and related CWEs. The issue is resolved in version 2.26.6.
Potential Impact
An attacker can exploit this vulnerability to access and exfiltrate sensitive environment variables and secrets that should be protected by capability policies. This can lead to disclosure of confidential credentials, impacting confidentiality without affecting integrity or availability.
Mitigation Recommendations
Upgrade flyto-core to version 2.26.6 or later, where this vulnerability is fixed. Since no official patch links or advisories are provided, verify the upgrade from the vendor's official channels. Patch status is not yet confirmed by a vendor advisory; check vendor resources for the latest remediation guidance.
CVE-2026-67427: CWE-522: Insufficiently Protected Credentials in flytohub flyto-core
Description
CVE-2026-67427 is a high-severity vulnerability in flytohub's flyto-core workflow engine prior to version 2.26.6. The engine's variable resolver expands environment variables (${env.VAR}) without enforcing an allowlist or capability policy check, enabling workflows to bypass default denylist protections and potentially exfiltrate secrets. This issue is fixed in version 2.26.6.
CVSS v3.1
Score 8.6high
Affected software
pkg:github/flytohub/flyto-coreRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The flyto-core workflow engine prior to version 2.26.6 allows unfiltered expansion of environment variables via the variable resolver syntax ${env.VAR}. This behavior bypasses the default capability policy denylist for environment variable access methods such as env.get and env.load_dotenv, which can lead to insufficient protection of credentials and secret data. The vulnerability is classified under CWE-522 (Insufficiently Protected Credentials) and related CWEs. The issue is resolved in version 2.26.6.
Potential Impact
An attacker can exploit this vulnerability to access and exfiltrate sensitive environment variables and secrets that should be protected by capability policies. This can lead to disclosure of confidential credentials, impacting confidentiality without affecting integrity or availability.
Mitigation Recommendations
Upgrade flyto-core to version 2.26.6 or later, where this vulnerability is fixed. Since no official patch links or advisories are provided, verify the upgrade from the vendor's official channels. Patch status is not yet confirmed by a vendor advisory; check vendor resources for the latest remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-29T15:02:20.413Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a6a4bfc9c2644c7f8e93ecf
Added to database: 07/29/2026, 18:52:44 UTC
Last enriched: 07/29/2026, 19:09:03 UTC
Last updated: 07/29/2026, 19:47:03 UTC
Views: 6
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