CVE-2026-58395 (GCVE-0-2026-58395)

Vulnerability from cvelistv5 – Published: 2026-10-15 15:16 – Updated: 2026-10-15 18:41
VLAI
Title
OPNsense: XPath injection in MVC safe-delete
Summary
OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.11, the safe-delete path reached through ApiMutableModelControllerBase::delBase() interpolates an unvalidated safe-delete token from the request URL into an XPath expression over config.xml before confirming that the token is a valid identifier. A user holding any one affected module privilege can send a crafted token to one of 21 affected delete endpoints covering Traffic Shaper, DHCP relay, Dnsmasq, Firewall Category, or Kea DHCP, causing the XPath to match configuration data across modules. The resulting error response exposes configuration item names, descriptions, reference paths, and UUIDs and provides an XPath substring-presence oracle, including for modules the user cannot otherwise access. The request does not modify configuration or perform a deletion. This issue is fixed in version 26.1.11.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-15 18:37 UTC
CWE
  • CWE-643 - Improper Neutralization of Data within XPath Expressions ('XPath Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7614 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
opnsense core Affected: < 26.1.11
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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