CVE-2026-30242

The webhook URL validation in plane/app/serializers/webhook.py only checks ip.is_loopback, allowing attackers with workspace ADMIN role to create webhooks pointing to private/internal network addresses (10.x.x.x, 172.16.x.x, 192.168.x.x, 169.254.169.254, etc.). When webhook events fire, the server makes requests to these internal addresses and stores the response, enabling SSRF with full response read-back.

• Cloud metadata exfiltration: Access AWS/GCP/Azure instance metadata (IAM credentials, tokens)
• Internal service scanning: Probe internal network services not exposed to the internet
• Data exfiltration via response logs: Full response body from internal services is stored and returned to the attacker through the webhook logs API
• Bypass vectors: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 169.254.0.0/16, 0.0.0.0, ::ffff: mapped addresses

Untrusted input controls the target URL of a server-initiated request, which may reach internal services not otherwise accessible from outside. Typical impact: access to internal metadata services, internal APIs, or cloud credentials.

CVE-2026-30242 has a CVSS score of 8.5 (High). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.2.3); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2026-30242? CVE-2026-30242 is a high-severity server-side request forgery (SSRF) vulnerability in plane (pip), affecting versions <= 1.2.1. It is fixed in 1.2.3. Untrusted input controls the target URL of a server-initiated request, which may reach internal services not otherwise accessible from outside.
2. How severe is CVE-2026-30242? CVE-2026-30242 has a CVSS score of 8.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of plane are affected by CVE-2026-30242? plane (pip) versions <= 1.2.1 is affected.
4. Is there a fix for CVE-2026-30242? Yes. CVE-2026-30242 is fixed in 1.2.3. Upgrade to this version or later.
5. Is CVE-2026-30242 exploitable, and should I be worried? Whether CVE-2026-30242 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2026-30242 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2026-30242? Upgrade plane to 1.2.3 or later.