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CVE

CVE-2026-30242

Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer
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CVE

CVE-2026-30242

Plane: SSRF via Incomplete IP Validation in Webhook URL Serializer

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.

Package Versions Affected

Package Version
patch Availability
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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
8.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/makeplane/plane/releases/tag/v1.2.3, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30242.json, https://github.com/makeplane/plane/security/advisories/GHSA-fpx8-73gf-7x73, https://nvd.nist.gov/vuln/detail/CVE-2026-30242

Severity

8.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
8.5
EPSS Probability
0.00015%
EPSS Percentile
0.03074%
Introduced Version
0
Fix Available
c3a9f997899fbd18b91d25b45ec45c93c689ba55

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