VulnSocial

CVE-2026-51994

LOWCVSS 9.1 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

mcp-remote versions 0.1.32 through 0.1.38 are vulnerable to Server-Side Request Forgery (SSRF) via the resource_metadata URL extracted from a remote MCP server's WWW-Authenticate header

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-09-26: 109-26
Full discourse1 post
  • Upwind Security MDR@UpwindMDR

    🚨Critical - mcp-remote SSRF via WWW-Authenticate resource_metadata URL (CVE-2026-51994) mcp-remote 0.1.32-0.1.38 trusts the resource_metadata URL parsed from a remote MCP server’s WWW-Authenticate header and fetches it server-side, enabling SSRF to attacker-chosen internal/metadata endpoints. Network exploitable with no privileges or user interaction. 👉Affected: mcp-remote 0.1.32-0.1.38

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