SSRF Vulnerability in Flyto2 Core Affects Automation Workflows
CVE-2026-55787

7.1HIGH

Key Information:

Vendor

Flytohub

Status
Flyto-core
Vendor
CVE Published:
14 October 2026

What is CVE-2026-55787?

The Flyto2 Core execution kernel for automation workflows has a Server-Side Request Forgery (SSRF) vulnerability due to inadequate validation of URL requests. Prior to version 2.26.3, certain functions failed to correctly validate resolved addresses against various IPv4 transition formats. This flaw allows authenticated workflow authors to craft requests exploiting the Execution API, potentially disclosing sensitive internal service data or cloud metadata. The vulnerability has been addressed in version 2.26.3, enhancing the security of automation workflows.

Affected Version(s)

flyto-core < 2.26.3

References

https://github.com/flytohub/flyto-core/security/advisorie...
x_refsource_CONFIRM
https://github.com/flytohub/flyto-core/pull/20
x_refsource_MISC
https://github.com/flytohub/flyto-core/commit/519e040384a...
x_refsource_MISC

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.