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CVE

CVE-2026-67426

Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration
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CVE

CVE-2026-67426

Flyto2 Core: Unauthenticated flyto-verification /run: callback_url SSRF and internal runner-secret exfiltration

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/verificationservice.py exposes unauthenticated POST /run on 0.0.0.0:8344 and uses client-supplied callbackurl for an outbound POST with X-Internal-Key: $FLYTORUNNERSECRET while bypassing target_allowed, allowing unauthenticated SSRF and runner secret exfiltration. This issue is fixed in version 2.26.7.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/flytohub/flyto-core/releases/tag/v2.26.7, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67426.json, https://github.com/flytohub/flyto-core/security/advisories/GHSA-jx74-cqjv-2c67, https://nvd.nist.gov/vuln/detail/CVE-2026-67426, https://github.com/flytohub/flyto-core/commit/0a0a528520ec18f5a21f1ddf858a71cc1edfb6e9

Severity

9.3

CVSS Score
0
10

Basic Information

Base CVSS
9.3
EPSS Probability
0.00308%
EPSS Percentile
0.23371%
Introduced Version
0
Fix Available
9449def37907190798b5d677b716526b09ae7302

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