CVE-2026-78205 (GCVE-0-2026-78205)

Vulnerability from cvelistv5 – Published: 2026-08-24 00:30 – Updated: 2026-08-24 19:02
VLAI
Title
BentoML 1.4.19 through 1.4.39 Server-Side Request Forgery via Unfiltered RFC 6598 Shared Address Space
Summary
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.
Severity
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
5.8 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-24 19:02 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6373 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
bentoml BentoML Affected: 1.4.19 , ≤ 1.4.39 (semver)
    cpe:2.3:a:bentoml:bentoml:-:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-06-30 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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