CVE-2026-47725: medium-severity vulnerability in juev nebula-mesh
nebula-mesh: Web UI lacks CSRF tokens on /ui/* mutating endpoints
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.2%
nebula-mesh is a self-hosted control plane for Slack Nebula mesh virtual private network. Prior to version 0.3.3, every /ui/* POST / PUT / PATCH / DELETE route processes the request as soon as the session cookie validates. SameSite=Lax on the session cookie prevents most cross-site form submits but does not protect: top-level form-submit navigations from third-party pages (some browsers still send Lax cookies on top-level POSTs); same-registrable-domain attackers (sibling-subdomain XSS, subdomain takeover); the GET /ui/logout route, which a third-party <img src=".../ui/logout"> can force-trigger. This issue has been patched in version 0.3.3.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected products
juev · nebula-meshRelated CVEs — juev nebula-mesh
In the same product, most dangerous first.
CVE-2026-47723HIGHnebula-mesh: Web UI and API responses lack security headers (CSP, X-Frame-Options, HSTS, etc.)EPSS 0.5%CVE-2026-48025MEDIUMnebula-mesh: Decrypted CA private key persists in heap after signingEPSS 0.5%CVE-2026-49258HIGHNebula Mesh: Web UI lacks ownership checks, enabling cross-operator access to hosts and networks (read, block, delete)EPSS 0.5%CVE-2026-47724CRITICALnebula-mesh: API endpoints lack ownership checks, enabling cross-operator privilege escalationEPSS 0.5%CVE-2026-47722HIGHnebula-mesh: Host advanced overrides allow YAML injection into agent config.ymlEPSS 0.5%CVE-2026-47726HIGHnebula-mesh: GET /api/v1/audit-log discloses all entries to any operatorEPSS 0.3%