Vulnerability · Published Jul 29, 2026 · Assigned by GitHub_M
CVE-2026-67425Flyto2 Core: LLM/API keys leak to an attacker-controlled base_url
High 8.6
In plain English
A high-severity security flaw in flyto-core from flytohub. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, llm.chat reads provider keys such as OPENAI_API_KEY and ANTHROPIC_API_KEY from the environment and sends them in the Authorization: Bearer header to caller-controlled base_url, allowing an attacker to receive the operator's key on a public host that passes the SSRF guard. This issue is fixed in version 2.26.6.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | flyto-core | 2.26.7 | GHSA-qq9q-xgm3-xv9g |
| PyPI | flyto-core | 2.26.7 | PYSEC-2026-3573 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| flytohub | flyto-core | < 2.26.6 |
Weakness: CWE-201, CWE-522 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N