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Back to active CVEs
High · CVSS 7.6CVE-2026-104973

Plane: DNS Rebinding Bypass of CVE-2026-30242 SSRF Fix in Webhook DeliveryCVE-2026-104973

Answer in brief

CVE-2026-104973 records a High severity (CVSS 7.6) vulnerability in Plane: DNS Rebinding Bypass of CVE-2026-30242 SSRF Fix in Webhook Delivery. The current sources do not mark it as known exploited. The current feed maps makeplane/plane (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 5, 2026Updated Oct 5, 2026Source checked Oct 5, 2026First seen by HOL Oct 5, 2026Material review Oct 5, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.6
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.6. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps makeplane/plane (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
makeplane/planegeneric<1.4.01.4.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for makeplane/plane.
  2. 2Review the reported fix. Update makeplane/plane to 1.4.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 5, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 5, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Plane: Disabled User Auto-Reactivation on LoginSame makeplane/plane package
  • Plane: Cross-tenant asset authorization bypass in Plane Spaces public-board endpointsSame makeplane/plane package
  • Plane: SSRF in Gitea OAuthSame makeplane/plane package
  • Plane: Incomplete fix of CVE-2026-27706 — SSRF still reachable on: missing is_blocked_ip (CGNAT/multicast) + DNS-rebinding TOCTOUSame makeplane/plane package
  • Plane: Invitation Hijack in Project Join Flow via Missing Authorization and Email-Only AcceptanceSame makeplane/plane package
  • Plane: Cross-tenant stored XSS in intake enables account takeoverSame makeplane/plane package

Record context

Vulnerability class
SSRF
EPSS
Not reported
CWE IDs
CWE-918
Source
CVE List V5
Source checked
Oct 5, 2026
References
4 linked sources
Open source record