Description
Incorrect access control in the /{form}/webhooks/{webhook} endpoint of Deck9 Input v2.0.1 allows authenticated attackers to arbitrarily modify or delete another tenant's webhook via a crafted request.
Published: 2026-06-15
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is an incorrect access control flaw in the "/{form}/webhooks/{webhook}" endpoint of Deck9 Input, which allows authenticated attackers to modify or delete another tenant’s webhook by crafting an HTTP request. The weakness is a classic privilege‑escalation issue classified as CWE‑284.

Affected Systems

The product affected is Deck9 Input version 2.0.1 from the vendor Deck9. Users relying on this version are vulnerable unless they upgrade to a patched release. No other versions or vendors are listed as affected.

Risk and Exploitability

The CVSS base score of 8.1 marks this as a high‑severity vulnerability. The EPSS score is below 1 %, indicating a low probability of exploitation in the wild. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires authenticated access; an attacker would need valid credentials to send a crafted request to the vulnerable endpoint.

Generated by OpenCVE AI on June 18, 2026 at 03:35 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest Deck9 Input update that corrects the access‑control logic for webhook endpoints.
  • If an update is unavailable, isolate the webhooks endpoint by limiting user roles to only the tenant that owns the webhook and removing unrestricted HTTP access to the endpoint.
  • Implement monitoring of webhook configuration changes and audit logs to detect unauthorized modifications.

Generated by OpenCVE AI on June 18, 2026 at 03:35 UTC.

Tracking

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Advisories

No advisories yet.

History

Fri, 26 Jun 2026 10:45:00 +0000

Type Values Removed Values Added
First Time appeared Deck9
Deck9 deck9 Input
Vendors & Products Deck9
Deck9 deck9 Input

Thu, 18 Jun 2026 04:45:00 +0000

Type Values Removed Values Added
Title Access Control Bypass Permitting Webhook Modification in Deck9 Input

Wed, 17 Jun 2026 05:15:00 +0000

Type Values Removed Values Added
Title Access Control Bypass Permitting Webhook Modification in Deck9 Input

Tue, 16 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 15 Jun 2026 19:30:00 +0000

Type Values Removed Values Added
Description Incorrect access control in the /{form}/webhooks/{webhook} endpoint of Deck9 Input v2.0.1 allows authenticated attackers to arbitrarily modify or delete another tenant's webhook via a crafted request.
References

Subscriptions

Deck9 Deck9 Input
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-06-16T18:09:13.797Z

Reserved: 2026-06-07T00:00:00.000Z

Link: CVE-2026-50875

cve-icon Vulnrichment

Updated: 2026-06-16T18:09:09.507Z

cve-icon NVD

Status : Deferred

Published: 2026-06-15T20:16:30.367

Modified: 2026-06-16T19:16:59.953

Link: CVE-2026-50875

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-26T09:46:21Z

Weaknesses