Loading vulnerability…
CVE-2026-42223 is an information disclosure vulnerability in Nginx UI prior to version 2.3.8. The flaw is in the GetSettings API handler in api/settings/settings.go (reported at lines 24-65), which serializes settings structs to JSON and returns them to authenticated users. Although many sensitive configuration fields are marked with the struct tag protected:"true", that protection is only enforced on write operations through ProtectedFill in SaveSettings and is not enforced when settings are read back and serialized. As a result, the API discloses more than 40 protected fields to any authenticated user. Exposed values include JwtSecret, NodeSecret, OIDC ClientSecret, and IP whitelist configuration. The issue stems from improper handling of sensitive fields during JSON serialization of configuration objects.
Mallory correlates every CVE against your assets, your vendors, and active adversary campaigns. Know which vulnerabilities matter for you, not just which ones are loud.
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.