CVE-2026-55513

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.3.0 to before version 0.5.0, the nebula-mgmt Web UI host-creation path ignores both the server-wide enrollmenttokenttl security setting and per-network networkconfig.enrollmenttokenttl overrides. API host creatio...

CVE-2026-55513

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. In versions 0.3.0 through before 0.5.0 , the POST /ui/hosts Web UI endpoint hardcodes a 24-hour enrollment token expiry instead of using the configured enrollment_token_ttl (server-wide or per-network) resolver that the API pat...

EUVD-2026-71719

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.3.0 to before version 0.5.0, the nebula-mgmt Web UI host-creation path ignores both the server-wide enrollmenttokenttl security setting and per-network networkconfig.enrollmenttokenttl overrides. API host creatio...

CVE-2026-55513 nebula-mesh: Web UI host creation ignores configured enrollment token TTL and mints 24-hour bearer enrollment tokens

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.3.0 to before version 0.5.0, the nebula-mgmt Web UI host-creation path ignores both the server-wide enrollmenttokenttl security setting and per-network networkconfig.enrollmenttokenttl overrides. API host creatio...

CVE-2026-55513 nebula-mesh: Web UI host creation ignores configured enrollment token TTL and mints 24-hour bearer enrollment tokens

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.3.0 to before version 0.5.0, the nebula-mgmt Web UI host-creation path ignores both the server-wide enrollmenttokenttl security setting and per-network networkconfig.enrollmenttokenttl overrides. API host creatio...

CVE-2026-55513: Insufficient Session Expiration

nebula-mesh is a self-hosted control plane for Slack Nebula mesh VPN. From version 0.3.0 to before version 0.5.0, the nebula-mgmt Web UI host-creation path ignores both the server-wide enrollmenttokenttl security setting and per-network networkconfig.enrollmenttokenttl overrides. API host creatio...

nebula-mesh: Web UI host creation ignores configured enrollment token TTL and mints 24-hour bearer enrollment tokens

Summary The nebula-mgmt Web UI host-creation path ignores both the server-wide enrollmenttokenttl security setting and per-network networkconfig.enrollmenttokenttl overrides. API host creation and token-regeneration paths use the configured TTL resolver, but POST /ui/hosts hardcodes now.Add24...

GHSA-G4X6-JCVR-9M3G nebula-mesh: Web UI host creation ignores configured enrollment token TTL and mints 24-hour bearer enrollment tokens

Summary The nebula-mgmt Web UI host-creation path ignores both the server-wide enrollmenttokenttl security setting and per-network networkconfig.enrollmenttokenttl overrides. API host creation and token-regeneration paths use the configured TTL resolver, but POST /ui/hosts hardcodes now.Add24...

GHSA-339V-266X-79XR nebula-mesh: Host revocation is not durable - blocked/offboarded hosts can regain a valid certificate

Summary Two related authorization gaps let a host that should no longer be trusted obtain a fresh, valid Nebula certificate, because nebula-mgmt does not re-evaluate revocation/authorization state at certificate issuance time — only at poll time. 1. Blocklist not enforced at sign / re-enroll time...

Replay Attack

Overview Affected versions of this package are vulnerable to Replay Attack in the signed-poll process due to the nonce cache being stored in-memory and limited in size. An attacker can obtain unauthorized access to a freshly-minted enrollment token by replaying a previously captured signed-poll...

Replay Attack

Overview Affected versions of this package are vulnerable to Replay Attack in the signed-poll process due to the nonce cache being stored in-memory and limited in size. An attacker can obtain unauthorized access to a freshly-minted enrollment token by replaying a previously captured signed-poll...

Replay Attack

Overview Affected versions of this package are vulnerable to Replay Attack in the signed-poll process due to the nonce cache being stored in-memory and limited in size. An attacker can obtain unauthorized access to a freshly-minted enrollment token by replaying a previously captured signed-poll...

PT-2026-56108

internal/api/pop/nonce.go:25,40,86 + internal/api/server.go:38 — the signed-poll nonce cache is an in-process LRU sized at 65,536 entries. internal/api/updates.go:31 sets pollClockSkew = 5 time.Minute as the replay window. Affected All released versions through v0.3.0 that have shipped the ADR 00...

nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation

The /api/v1/ route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at internal/api/hosts.go:384: "API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer." The Web UI gates state-changing routes...

GHSA-598G-H2VC-H5VG nebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalation

The /api/v1/ route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at internal/api/hosts.go:384: "API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer." The Web UI gates state-changing routes...

PT-2026-47550

The /api/v1/ route surface trusts the bearer token alone for authorisation on most endpoints. The codebase itself admits this at internal/api/hosts.go:384: "API trusts the bearer token for authorisation; per-CA ownership is enforced only in the Web layer." The Web UI gates state-changing routes...