High 7.1Published Oct 15, 2026

CVE-2026-53582OPNsense: XPATH Injection can disclose any secret in config.xml

Updated under an hour ago (2026-10-19 09:00 UTC)

Does this affect you?

It affects opnsense core. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.73%, higher than 53% of scored CVEs.

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Exploited in the last 30 days

OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.10, the Trust module stores attacker-controlled certificate authority and certificate refid values and interpolates them into XPath expressions in src/opnsense/mvc/app/models/OPNsense/Trust/FieldTypes/CAsField.php and src/opnsense/mvc/app/models/OPNsense/Trust/FieldTypes/CertificatesField.php. A user with CA Manager or Certificate Manager privileges can submit a crafted refid and repeatedly retrieve the object to obtain a boolean refcount oracle, allowing values in config.xml to be recovered character by character. Exposed values can include password hashes, API credentials, certificate private keys, VPN key material, and high-availability credentials, enabling privilege escalation and compromise of other security domains. This issue is fixed in version 26.1.10.

CVSS: 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:L
Weakness (CWE): CWE-91, CWE-643
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.73% (percentile 53)
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 15, 2026

Affected products

Affected products

opnsense core opnsense:core (from the name)	before 26.1.10	CNA record

References

https://github.com/opnsense/core/security/advisories/GHSA-xww7-76m6-mh2rx-refsource-confirm
https://github.com/opnsense/core/commit/e2cd067343511252fb0d391a17d82d3ecceece45x-refsource-misc
https://github.com/opnsense/core/commit/fc2f0d745c17855d2027b192fd4e3fa913e26859x-refsource-misc
http://seclists.org/fulldisclosure/2026/Jul/18

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.