High 7.1Published Aug 25, 2026

CVE-2026-79786Coroot 1.20.2 through 1.24.5 Unvalidated Redirect URI in MCP OAuth Client Registration

Updated under an hour ago (2026-10-19 06:10 UTC)

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It affects coroot. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
Weakness (CWE): CWE-601
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Aug 28, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

coroot coroot coroot:coroot (from the name)	from 1.20.2 through 1.24.5	CNA record

References

https://github.com/coroot/corootproduct
https://github.com/coroot/coroot/issues/929issue-tracking
https://github.com/coroot/coroot/blob/v1.24.5/api/mcp_oauth.gotechnical-description
https://www.vulncheck.com/advisories/coroot-1.20.2-through-1.24.5-unvalidated-redirect-uri-in-mcp-oauth-client-registrationthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.