CVE-2026-48025— nebula-mesh: Decrypted CA private key persists in heap after signing
Quick assessment
Affected
juev nebula-mesh
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Forgekeep nebula-mesh是Forgekeep团队的一系列网络代理和VPN整合软件。 Forgekeep nebula-mesh 0.3.7之前版本存在资源管理错误漏洞，该漏洞源于未正确擦除解密后的CA私钥，导致私钥在进程堆中持久存在。
Possible ATT&CK Techniques 1 AI
T1005 · Data from Local SystemAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| juev | nebula-mesh | < 0.3.7 |
affected |
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I. Basic Information for CVE-2026-48025
Vulnerability Information
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Vulnerability Title
nebula-mesh: Decrypted CA private key persists in heap after signing
Source: CVE Program / CVE List V5
Vulnerability Description
nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.7, internal/pki/resolver.go:36-64 constructs a CAManager with the plaintext ed25519.PrivateKey after unwrapping via the master key; internal/pki/ca.go:13-16 stores it. Callers at internal/api/enroll.go:116, internal/api/updates.go:297, and internal/api/mobile_bundle.go:40 use the manager for one Sign() and drop the reference on function return — but the underlying slice contents are not wiped before release. The keystore package's contract (internal/keystore/keystore.go doc: "Callers MUST zeroise the returned plaintext DEK as soon as it is no longer needed") is not met by the CAManager consumer. Decrypted CA private keys persist in process heap until Go's GC scavenges the underlying slice — minutes to hours under load, indefinitely on idle servers. This issue has been patched in version 0.3.7.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在释放前清理堆内存不恰当(堆检查)
Source: CVE Program / CVE List V5
Vulnerability Title
Forgekeep nebula-mesh 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Forgekeep nebula-mesh是Forgekeep团队的一系列网络代理和VPN整合软件。 Forgekeep nebula-mesh 0.3.7之前版本存在资源管理错误漏洞，该漏洞源于未正确擦除解密后的CA私钥，导致私钥在进程堆中持久存在。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| juev | nebula-mesh | < 0.3.7 | - |
|
II. Public POCs for CVE-2026-48025
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-48025 (1)
Vendor Advisories for CVE-2026-48025 (1)
Vendor Pages for CVE-2026-48025 (1)
Same Patch Batch · juev · 2026-07-28 · 6 CVEs total
| CVE-2026-49258 | 8.8 HIGH | Nebula Mesh: Web UI lacks ownership checks, enabling cross-operator access to hosts and ne |
| CVE-2026-47726 | 7.1 HIGH | nebula-mesh: GET /api/v1/audit-log discloses all entries to any operator |
| CVE-2026-47725 | 6.9 MEDIUM | nebula-mesh: Web UI lacks CSRF tokens on /ui/* mutating endpoints |
| CVE-2026-47768 | 5.5 MEDIUM | nebula-mesh: Newly-minted operator API key exposed in redirect URL (Referer, history, prox |
| CVE-2026-48058 | 4.6 MEDIUM | nebula-mesh: Session and OIDC state cookies lack the Secure attribute |
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V. Comments for CVE-2026-48025
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