Note: This data is for reference and cybersecurity research purposes only.CyStack advises users not to use this information for unlawful purposes.
CVE-2026-71490 is a vulnerability classified as Incorrect Authorization, affecting core (affected versions: < 26.1.11). This vulnerability is rated High, with a CVSS score of 7.1. Public exploit code or evidence is available for this vulnerability, but that does not confirm exploitation in the wild.
Analyzing data...
OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.11, OPNsense\Core\ACL::hasPrivilege() appends a directly assigned comma-separated value as one string and then uses an exact comparison when checking user-config-readonly. A user directly assigned both a component write privilege and user-config-readonly can therefore be treated as lacking the read-only restriction, and MVC APIs protected by throwReadOnly() can persist configuration changes for that component. Group privileges are not affected by the same parser flaw because the group path already splits comma-separated values. This issue is fixed in version 26.1.11.
CyStack VulnScan continuously discovers assets, validates vulnerabilities, and helps security teams prioritize remediation across the organization.
en
