CVE-2026-104973highCWE-918

CVE-2026-104973: high-severity vulnerability in makeplane plane

Plane: DNS Rebinding Bypass of CVE-2026-30242 SSRF Fix in Webhook Delivery

Published · Updated

41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 7.6epss 0.3%
exploitation probability
0.3%top 83% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
Plane is an open-source project management tool. Prior to 1.4.0, the fix for CVE-2026-30242 validates webhook IP addresses only when the webhook is created in apps/api/plane/app/serializers/webhook.py. The delivery task in apps/api/plane/bgtasks/webhook_task.py performs a separate DNS resolution when sending the request and does not validate the resolved IP address, allowing DNS rebinding to bypass the SSRF protection. This issue is fixed in 1.4.0.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:N
Affected products
makeplane · plane
public PoCs found — 1
cve_referencegithub.com/cthackers/adm-zip/security/advisories/GHSA-j5f4-cc29-5x44unverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — makeplane plane

In the same product, most dangerous first.

CVE-2024-31461CRITICALPlane Server-Side Request Forgery (SSRF) VulnerabilityEPSS 0.7%CVE-2024-47830CRITICALPlane allows server side request forgery via /_next/image endpointEPSS 0.6%CVE-2026-104974HIGHPlane: Disabled User Auto-Reactivation on LoginEPSS 0.5%CVE-2026-105641CRITICALPlane: Hardcoded SECRET_KEY and LIVE_SERVER_SECRET_KEY shipped in aio/cli community deployment manifests — session forgery and live-server auth bypassEPSS 0.5%CVE-2026-105635HIGHPlane: Unauthenticated Project Invitation Email Disclosure Enables Unauthorized Project Join Without TokenEPSS 0.4%CVE-2026-30244HIGHPlane: Unauthenticated Workspace Member Information DisclosureEPSS 0.4%
References
https://github.com/cthackers/adm-zip/security/advisories/GHSA-j5f4-cc29-5x44https://github.com/makeplane/plane/commit/04622ce1188c4680951f0001e35efb342fe51615https://github.com/makeplane/plane/pull/9163https://github.com/makeplane/plane/releases/tag/v1.4.0https://github.com/makeplane/plane/security/advisories/GHSA-whh3-5g95-4qhc