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Server-Side Request Forgery (SSRF) Affecting pluralsh-nexus package, versions <0.12.40-r1

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.61% (47th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-PLURALSHNEXUS-19432941
  • published31 Aug 2026
  • disclosed28 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 28 Aug 2026

CVE-2026-55245  (opens in a new tab)
CWE-918  (opens in a new tab)

How to fix?

Upgrade Minimos:latest pluralsh-nexus to version 0.12.40-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream pluralsh-nexus package and not the pluralsh-nexus package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Bifrost is an enterprise AI gateway for routing requests to model providers. Prior to 1.5.17, the isPublicIP function in core/providers/utils/fetch.go, reached through FetchAndEncodeURL for Bedrock and Vertex image or document URLs, classifies Carrier-Grade NAT 100.64.0.0/10, IPv6 6to4 2002::/16, NAT64 64:ff9b::/96 and 64:ff9b:1::/48, and deprecated IPv6 site-local fec0::/10 addresses as public. A remote attacker who controls a multimodal request URL can make the gateway fetch internal services, including a cloud instance metadata endpoint encoded through 6to4 or NAT64. This issue is fixed in version 1.5.17.