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CVE-2026-55245

Published Aug 28, 2026 CWE-918

Overview

CVE-2026-55245 is a known-severity vulnerability. It was published on August 28, 2026.

Technical Description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHub github.com/maximhq/bifrost/commit/54ec431fc5255ff42c36420d88549477e0b33d89 GitHub github.com/maximhq/bifrost/pull/4092 GitHub github.com/maximhq/bifrost/releases/tag/core/v1.5.17 GitHub github.com/maximhq/bifrost/security/advisories/GHSA-w98g-5w9p-p3rc GitHub github.com/maximhq/bifrost/security/advisories/GHSA-w98g-5w9p-p3rc

Frequently Asked Questions

What is CVE-2026-55245?

CVE-2026-55245 is a known-severity vulnerability. It was published on August 28, 2026.

How severe is CVE-2026-55245?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2026-55245?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-55245?

CyberStrike's AI-powered security agents can automatically detect CVE-2026-55245 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

How CyberStrike Helps

Autonomous Discovery

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Continuous Pentesting

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Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.
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