GHSA-GQV7-J2J8-QMWQ Mattermost fails to canonicalize IPv4-mapped IPv6 addresses before reserved IP validation

Mattermost versions 11.3.x = 11.3.0, 11.2.x = 11.2.2, 10.11.x = 10.11.10 fail to canonicalize IPv4-mapped IPv6 addresses before reserved IP validation which allows an attacker to perform SSRF attacks against internal services via IPv4-mapped IPv6 literals e.g., ::ffff:127.0.0.1.. Mattermost...

CVE-2025-2691

Versions of the package nossrf before 1.0.4 are vulnerable to Server-Side Request Forgery SSRF where an attacker can provide a hostname that resolves to a local or reserved IP address space and bypass the SSRF protection mechanism...

Comodo, CAs Issue Forbidden Certificates

Certificate authority Comodo admits it incorrectly issued eight certificates that include forbidden internal server names or reserved IP addresses. In 2012, the Certificate Authority/Browser Forum banned the use of such designations for certs issued after Nov. 1, 2015. The decision was meant to c...