MEDIUMCVSS 5.8Vulnerability
CVE-2026-78205
BentoML's outbound connection safeguard (make_safe_connect in _internal/utils/uri.py) blocks private, loopback, and link-local IP addresses but fails to reject the RFC 6598 shared address space (100.64.0.0/10, CGNAT). In versions 1.4.19 through 1.4.39, an unauthenticated attacker can supply URLs pointing to that range via multipart file handling (MultipartSerde.ensure_file) or JSON request parsing (JSONSerde.parse_request), causing the server to make outbound requests to internal hosts on CGNAT networks (Server-Side Request Forgery). This is an incomplete fix for CVE-2025-54381.
Properties
- severity
- MEDIUM
- cvss_severity
- MEDIUM
- cvss_score
- 5.8
- retrieved_at
- 2026-09-25T15:10:03+00:00
- score
- 5.8
- last_source
- NVD
- cve_id
- CVE-2026-78205
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
- signal_observed_at
- 2026-09-25T15:10:03+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
- published_at
- 2026-08-24T01:16:57.823
- last_modified
- 2026-09-24T20:44:42.207
Related Entities (2)
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Server-Side Request Forgery (SSRF)
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