What is the CVSS score of CVE-2026-30242?

CVE-2026-30242 has a CVSS 3.1 base score of 8.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Plane are affected by CVE-2026-30242?

A HIGH severity vulnerability (CVE-2026-30242) affecting Plane project management tool poses significant risk to organizations using this platform for sensitive project data and team collaboration.. A patch is available.

How to fix or mitigate CVE-2026-30242?

Within 24 hours: Inventory all instances of Plane in use across the organization and identify systems containing sensitive project data. Within 7 days: Implement network segmentation to restrict Plane access to trusted internal networks only, disable unnecessary Plane features if possible, and monitor access logs for suspicious activity. Within 30 days: Evaluate alternative project management tools and develop a migration plan; maintain continuous monitoring and check vendor advisories daily for patch availability.

Plane CVE-2026-30242

HIGH

Server-Side Request Forgery (SSRF) (CWE-918)

2026-03-06 security-advisories@github.com

GHSA-fpx8-73gf-7x73

SSRF Plane

8.5

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

8.5 HIGH

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

CVE Published

Mar 06, 2026 - 22:16 nvd

HIGH 8.5

DescriptionGitHub Advisory

Plane is an an open-source project management tool. Prior to version 1.2.3, 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. This issue has been patched in version 1.2.3.

AnalysisAI

Plane is an an open-source project management tool. [CVSS 8.5 HIGH]

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate as workspace ADMIN

Delivery

Create webhook with private IP address

Exploit

Trigger webhook event

Execution

Server performs SSRF request

Impact

Read internal service responses

Access

Authenticate as workspace ADMIN

Delivery

Create webhook with private IP address

Exploit

Trigger webhook event

Execution

Server performs SSRF request

Impact

Read internal service responses

Vulnerability AssessmentAI

Exploitation	Attacker must possess workspace ADMIN role in Plane instance. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 8.5 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	A remote attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
Remediation	Fixed in version 1.2.3.. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Inventory all instances of Plane in use across the organization and identify systems containing sensitive project data. …

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-30242 vulnerability details – vuln.today

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