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CVE-2026-30242— Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer

Quick assessment

Affected
makeplane plane
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Plane是Plane开源的一个开源、自托管的项目规划工具。 Plane 1.2.3之前版本存在代码问题漏洞，该漏洞源于Webhook URL验证仅检查ip.is_loopback，可能导致具有工作空间ADMIN角色的攻击者创建指向私有或内部网络地址的Webhook，从而启用服务端请求伪造。

CVSS 8.5 · High EPSS 0.34% · P25
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I. Basic Information for CVE-2026-30242

Vulnerability Information
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Vulnerability Title
Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Plane 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Plane是Plane开源的一个开源、自托管的项目规划工具。 Plane 1.2.3之前版本存在代码问题漏洞，该漏洞源于Webhook URL验证仅检查ip.is_loopback，可能导致具有工作空间ADMIN角色的攻击者创建指向私有或内部网络地址的Webhook，从而启用服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
makeplane plane < 1.2.3 -

II. Public POCs for CVE-2026-30242

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6642 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-30242

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Vendor Advisories for CVE-2026-30242 (1)

Vendor Pages for CVE-2026-30242 (1)

IV. Related Vulnerabilities

Same product: plane
Same vendor: makeplane
Same weakness: CWE-918

V. Comments for CVE-2026-30242

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