CVE-2026-67426
CRITICALFlyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration
Title source: cnaDescription
Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.7, the standalone flyto-verification service in src/core/verification_service.py exposes unauthenticated POST /run on 0.0.0.0:8344 and uses client-supplied callback_url for an outbound POST with X-Internal-Key: $FLYTO_RUNNER_SECRET while bypassing target_allowed, allowing unauthenticated SSRF and runner secret exfiltration. This issue is fixed in version 2.26.7.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/flytohub/flyto-core/security/advisories/GHSA-jx74-cqjv-2c67
X_Refsource_Misc x_refsource_misc
https://github.com/flytohub/flyto-core/commit/0a0a528520ec18f5a21f1ddf858a71cc1edfb6e9
X_Refsource_Misc x_refsource_misc
https://github.com/flytohub/flyto-core/releases/tag/v2.26.7
Scores
CVSS v3
9.3
EPSS
0.0029
EPSS Percentile
21.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-306
CWE-522
CWE-918
Status
published
Products (2)
flytohub/flyto-core
< 2.26.7
pypi/flyto-core
0 - 2.26.7PyPI
Published
Jul 29, 2026
Tracked Since
Jul 30, 2026