Security Vulnerabilities
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate the OAuth token scope on the callback which allows an authenticated Mattermost user to gain access to private repositories via modifying the scope parameter in the GitHub authorization URL.. Mattermost Advisory ID: MMSA-2026-00628
CVSS Score
5.4
EPSS Score
0.0
Published
2026-05-22
Sunshine is a self-hosted game stream host for Moonlight. In versions prior to 2026.516.143833, the client-certificate authentication can be bypassed because of how OpenSSL verification results are handled. In src/crypto.cpp, the custom verify callback treats X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY, X509_V_ERR_CERT_NOT_YET_VALID, and X509_V_ERR_CERT_HAS_EXPIRED as success. This can allow an untrusted certificate to pass authentication and access protected HTTPS endpoints. This issue has been fixed in version 2026.516.143833.
CVSS Score
9.8
EPSS Score
0.0
Published
2026-05-22
Missing authorization in the entry status management feature in Devolutions Server allows a non-administrator authenticated user to bypass the administrator-enforced Pending Approval flow and gain access to an entry's data via a crafted status change request.
This issue affects :
* Devolutions Server 2026.1.6.0 through 2026.1.16.0
* Devolutions Server 2025.3.20.0 and earlier
CVSS Score
5.4
EPSS Score
0.0
Published
2026-05-22
Missing authorization in the user profile update feature in Devolutions Server allows an authenticated Active Directory user to modify their own profile attributes via a crafted API request.
This issue affects :
* Devolutions Server 2026.1.6.0 through 2026.1.16.0
* Devolutions Server 2025.3.20.0 and earlier
CVSS Score
4.3
EPSS Score
0.0
Published
2026-05-22
Improper input validation in the external authentication provider flow in Devolutions Server allows an unauthenticated remote attacker to redirect victims to an attacker-controlled domain via a crafted login link.
This issue affects :
* Devolutions Server 2026.1.6.0 through 2026.1.16.0
* Devolutions Server 2025.3.20.0 and earlier
CVSS Score
5.0
EPSS Score
0.001
Published
2026-05-22
Improper access control in the entry documentation and attachment features in Devolutions Server allows an authenticated user with vault read access to retrieve the documentation and attachments of sealed entries via a crafted API request.
This issue affects :
* Devolutions Server 2026.1.6.0 through 2026.1.16.0
* Devolutions Server 2025.3.20.0 and earlier
CVSS Score
4.3
EPSS Score
0.0
Published
2026-05-22
Insufficient logging in the entry export feature in Devolutions Server allows an authenticated user with export permissions to export a sealed entry without triggering the unseal notification to administrators via a crafted export request.
This issue affects :
* Devolutions Server 2026.1.6.0 through 2026.1.16.0
* Devolutions Server 2025.3.20.0 and earlier
CVSS Score
2.4
EPSS Score
0.0
Published
2026-05-22
Authorization bypass in the entry duplication feature in Devolutions Server allows an authenticated user with write access to any vault to copy documentation and attachments from an entry in a vault they cannot access via a crafted save request.
This issue affects :
* Devolutions Server 2026.1.6.0 through 2026.1.16.0
* Devolutions Server 2025.3.20.0 and earlier
CVSS Score
2.6
EPSS Score
0.0
Published
2026-05-22
Unverified password change in Devolutions Server allows an attacker to change a user's password without providing the previous one via a crafted password change request.
This issue affects :
* Devolutions Server 2026.1.6.0 through 2026.1.16.0
* Devolutions Server 2025.3.20.0 and earlier
CVSS Score
3.1
EPSS Score
0.0
Published
2026-05-22
Missing authorization in the vault import feature in Devolutions Server 2026.1.16.0 and earlier allows a low-privileged authenticated user to create new vaults via a crafted import request.
CVSS Score
4.3
EPSS Score
0.0
Published
2026-05-22