CVE-2026-79786 (GCVE-0-2026-79786)

Vulnerability from cvelistv5 – Published: 2026-08-25 18:23 – Updated: 2026-08-28 22:33
VLAI
Title
Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration
Summary
Coroot's unauthenticated MCP OAuth dynamic client registration endpoint accepts any syntactically valid redirect URI without validation, allowing attackers to register clients pointing to attacker-controlled hosts. Attackers can send authorization URLs to signed-in users, capture their authorization codes upon consent approval, and exchange them for access tokens to hijack MCP sessions.
Severity
7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-28 22:32 UTC
CWE
  • CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7132 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
coroot coroot Affected: 1.20.2 , ≤ 1.24.5 (semver)
guessed Create a notification for this product.
Date Public
2026-07-01 00:00
Credits
George Chen
Show details on NVD website
To clipboard 

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