CVE-2026-47722 json
nebula-mesh: Host advanced overrides allow YAML injection into agent config.yml
published 2026-06-08 5 mo ago modified 2026-10-24 15 d ago also GHSA-7hp6-g3pq-3pc3 , GO-2026-5223 , EUVD-2026-48381
- cvss
- 8.7
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 40%
- public exploits
- 0
- none known
Summary
nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.2, `internal/configgen/generator.go:86,108,119` interpolates the operator-supplied `ListenHost` and `TunDevice` fields raw into a `text/template` that produces the agent's `config.yml`. `internal/web/advanced.go:20-35` accepts both with only `strings.TrimSpace` — no character or shape validation. Version 0.3.2 fixes the issue.
Patch / fix
- go github.com/juev/nebula-mesh 0.3.2
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 3 mo ago
Exploit prediction
0.47% chance of exploitation in the next 30 days, higher than 40% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 8.7 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/juev/nebula-mesh | <0.3.2 |
0.3.2 |
Affected products
- juev nebula-mesh
Classification
- Weakness
-
- CWE-94 Improper Control of Generation of Code
References
-
github.com
/forgekeep/nebula-mesh/commit/c1506f7344ab375a145a7449b193af3f19bb41ef
web
- github.com /forgekeep/nebula-mesh/security/advisories/GHSA-7hp6-g3pq-3pc3
-
github.com
/forgekeep/nebula-mesh/issues/126
web
-
github.com
/juev/nebula-mesh/security/advisories/GHSA-7hp6-g3pq-3pc3
web, advisory
-
github.com
/juev/nebula-mesh
package
Sources
- CVE List CVE-2026-47722
- GitHub Advisory GHSA-7hp6-g3pq-3pc3
- NVD CVE-2026-47722
- OSV GO-2026-5223
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.