github.com
https://github.com/forgekeep/nebula-mesh/commit/ffdd67dbf221d9a5855c39fbe11b49c245048d85 CVE-2026-48058
MEDIUM
nebula-mesh: Session and OIDC state cookies lack the Secure attribute
Record summary
CVE-2026-48058 has a selected CVSS score of 4.6 (medium).
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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationPoC
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Jul 28, 2026 · Source: CVE List
Affected products and versions
2| Product | Source | Version range | Status |
|---|---|---|---|
nebula-meshBrowse juev / nebula-mesh | CVE List | < 0.3.2 | affected |
github.com/juev/nebula-meshBrowse Go / github.com/juev/nebula-mesh | GitHub Advisory | Before 0.3.2 · Fixed in 0.3.2 | affected |
References
5github.com
https://github.com/forgekeep/nebula-mesh/releases/tag/v0.3.2 github.comConfirmation
https://github.com/forgekeep/nebula-mesh/security/advisories/GHSA-rqfj-vv8r-xhqc github.com
https://github.com/juev/nebula-mesh github.com
https://github.com/juev/nebula-mesh/security/advisories/GHSA-rqfj-vv8r-xhqc