OPNsense is a FreeBSD based firewall and routing platform.
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, Firewall Rules and NAT views place stored category names and alias descriptions into HTML title attributes in filter_rule.volt and nat_rule.volt without quote-safe encoding. The response layer uses ENT_NOQUOTES, so a double quote survives and closes the attribute, allowing an event-handler attribute to be added to the existing span. A user with Firewall Categories or Firewall Alias Edit privileges can store a category name or alias description; the category must be assigned to a filter or NAT rule, or the alia
Read at NIST National Vulnerability Database (CVE API 2.0)
- Product
- FreeBSD / OpenBSD / NetBSD, pfSense / OPNsense
- CVSS
- 5.4
- Exposure class
- Operating system, Edge / VPN / firewall
Why it ranks 15 (Routine)
- CVSS 5.4 medium
- Exposed product class: edge / VPN / firewall
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-58391 on this site · NVD · CVE.org · Vulnpedia
Related coverage
Other items that share a CVE or were clustered with this one.