CVE WatchJul 28, 2026

CVE-2026-48058

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, internal/web/session.go an

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Jul 28, 2026 · Last modified: Jul 28, 2026 · CWE-614

EPSS · 30d

Not enough EPSS history yet.

Technical description

nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, internal/web/session.go and internal/web/oidc.go set HttpOnly and SameSite=Lax on every cookie but never Secure. A single plaintext request to the origin (operator on a LAN, mistyped URL, HTTP→HTTPS not strictly enforced, reverse proxy misconfiguration) discloses the session. This issue has been patched in version 0.3.2.

Official references

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