CVE-2026-67427: CWE-522: Insufficiently Protected Credentials in flytohub flyto-core
Flytohub flyto-core versions prior to 2.26.6 contain a vulnerability where the workflow engine variable resolver expands environment variables without an allowlist or capability policy check. This allows workflow parameters to bypass default denylist policies and potentially exfiltrate secrets through allowed modules. The issue is fixed in version 2.26.6.
AI Analysis
Technical Summary
The flyto-core workflow engine prior to version 2.26.6 expands environment variables referenced as ${env.VAR} without enforcing an allowlist or capability policy check. This behavior enables a workflow parameter to circumvent the default capability policy denylist for env.get and env.load_dotenv functions, potentially allowing unauthorized access and exfiltration of sensitive environment secrets through modules that are otherwise permitted. The vulnerability is identified as CWE-522 (Insufficiently Protected Credentials), with related weaknesses CWE-668 and CWE-693. The issue is resolved in version 2.26.6.
Potential Impact
An attacker can exploit this vulnerability to access and exfiltrate sensitive environment variables that should be protected by capability policies. This leads to a confidentiality breach of secrets stored in environment variables. The vulnerability does not affect integrity or availability but has a high impact on confidentiality.
Mitigation Recommendations
Upgrade flyto-core to version 2.26.6 or later, where this vulnerability is fixed. There is no indication of any temporary workaround or alternative mitigation. Patch status is confirmed fixed in 2.26.6.
CVE-2026-67427: CWE-522: Insufficiently Protected Credentials in flytohub flyto-core
Description
Flytohub flyto-core versions prior to 2.26.6 contain a vulnerability where the workflow engine variable resolver expands environment variables without an allowlist or capability policy check. This allows workflow parameters to bypass default denylist policies and potentially exfiltrate secrets through allowed modules. The issue is fixed in version 2.26.6.
CVSS v3.1
Score 8.6high
Affected software
flytohub
flyto-core
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 expands environment variables referenced as ${env.VAR} without enforcing an allowlist or capability policy check. This behavior enables a workflow parameter to circumvent the default capability policy denylist for env.get and env.load_dotenv functions, potentially allowing unauthorized access and exfiltration of sensitive environment secrets through modules that are otherwise permitted. The vulnerability is identified as CWE-522 (Insufficiently Protected Credentials), with related weaknesses CWE-668 and CWE-693. The issue is resolved in version 2.26.6.
Potential Impact
An attacker can exploit this vulnerability to access and exfiltrate sensitive environment variables that should be protected by capability policies. This leads to a confidentiality breach of secrets stored in environment variables. The vulnerability does not affect integrity or availability but has a high impact on confidentiality.
Mitigation Recommendations
Upgrade flyto-core to version 2.26.6 or later, where this vulnerability is fixed. There is no indication of any temporary workaround or alternative mitigation. Patch status is confirmed fixed in 2.26.6.
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
Threat ID: 6a6a4bfc9c2644c7f8e93ecf
Added to database: 07/29/2026, 18:52:44 UTC
Last enriched: 08/06/2026, 17:48:13 UTC
Last updated: 09/11/2026, 19:31:57 UTC
Views: 70
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