CVE-2026-40205 Details
UNDERGOING ENRICHMENT
The CVE is currently being enriched by the Volerion team. The enrichment process results in the association of reference link tags, CVSS, and CPE applicability statement data.
Description
An attacker that holds an OAuth2 token granting only part of the required scopes can authenticate, because when more than one scope is required in the configuration, the remote token validation paths accept a token that carries only one of them, while the local token validation path correctly requires all of them. The configured authorization policy is not enforced, so a token that was granted only part of the required permissions is accepted where it should have been rejected. Use local token validation where tokens can be validated locally. Update to non-vulnerable version. No publicly available exploits are known.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
VolerionCVSS-B:…Vector:This vulnerability is currently being analyzed.No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 28, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0003.json | [email protected] |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
This vulnerability is currently being analyzed
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 28, 2026 | CVE Modified | CISA-ADP |
| Aug 28, 2026 | New CVE Received | [email protected] |