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CVE-2026-84312

HIGH 7.1

Published 2026-10-12 · Last modified 2026-10-14

Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1, GetCasdoorUri uses the configured Casdoor application name as a constant OAuth state value and CasdoorCallback does not compare the submitted state with a value bound to the initiating browser session. An unauthenticated attacker can cause a victim's browser to complete an attacker-controlled Casdoor authorization flow, and the callback can mint a Nginx UI session for the identity returned by that authorization code. This issue is fixed in version 2.4.1.

ELEVATED IMPACT

Severe if exploited (CVSS 7.1), but no known exploitation and low modeled probability. Patch on a normal cadence.

Exploitation likelihood

0.2%chance of exploitation in 30 days · 7th percentile

○ In CISA KEV ○ Catalogued PoC

Impact if exploited

7.1CVSS 3.1 · HIGH

  • ConfidentialityHigh
  • IntegrityLow
  • AvailabilityNone

What an attacker needs

  • ✓Access: Reachable over the network — no local access needed
  • ✓Privileges: No account or privileges required
  • ⚠User interaction: A user must take an action (click / open a file)
  • ✓Complexity: No special conditions — reliably repeatable

✓ lowers the bar for an attacker · ⚠ raises it

Proof of concept

No public PoC is currently catalogued.

Search for new PoCs

Search GitHub now — results may be empty or unverified.

Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.

Data snapshot:

Affected

Vendors 0xjacky

Products Nginx Ui

Weakness (CWE)

  • CWE-287: : Improper Authentication
  • CWE-352: : Cross-Site Request Forgery (CSRF)

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

References and research data (JSON)

Packages and version ranges

Each advisory describes its own package and affected ranges. A boundary applies to that range; it is not a universal upgrade recommendation.

  • Nginx-UI Go

    pkg:golang/Nginx-UI

    SEMVER range
    • All earlier versions (introduced 0)
    Additional upstream package constraints
    {
  "database": {
    "last_known_affected_version_range": "< 1.9.10-0.20260703131214-23d1934099b0",
    "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-44xr-mrhh-qm78/GHSA-44xr-mrhh-qm78.json"
  }
}
    GitHub Advisory Database · GHSA-44xr-mrhh-qm78 · Updated 2026-10-19T21:40:46.634165616Z
  • github.com/0xJacky/Nginx-UI Go

    pkg:golang/github.com/0xJacky/Nginx-UI

    SEMVER range
    • All earlier versions (introduced 0)
    Additional upstream package constraints
    {
  "ecosystem": {
    "imports": [
      {
        "path": "github.com/0xJacky/Nginx-UI/api/user",
        "symbols": [
          "BeginPasskeyRegistration",
          "CasdoorCallback",
          "EnrollTOTP",
          "GetCasdoorUri",
          "InitManageUserRouter",
          "InitUserRouter",
          "UpdateCurrentUserPassword"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/backup",
        "symbols": [
          "InitAutoBackupRouter",
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/streams",
        "symbols": [
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/settings",
        "symbols": [
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/internal/middleware",
        "symbols": [
          "RequireSecureSession"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/internal/backup",
        "symbols": [
          "ValidateAutoBackupConfig",
          "createCustomDirectoryBackup",
          "createEncryptedBackup"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/certificate",
        "symbols": [
          "InitAcmeUserRouter",
          "InitCertificateRouter",
          "InitCertificateWebSocketRouter",
          "InitDNSCredentialRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/terminal",
        "symbols": [
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/nginx",
        "symbols": [
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/sites",
        "symbols": [
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/mcp/config",
        "symbols": [
          "handleNginxConfigAdd"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/internal/user",
        "symbols": [
          "DeleteToken",
          "DeleteUserTokens",
          "GetTokenUserByShortToken"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/mcp",
        "symbols": [
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/api/dns",
        "symbols": [
          "InitRouter"
        ]
      },
      {
        "path": "github.com/0xJacky/Nginx-UI/internal/config",
        "symbols": [
          "ValidateConfigDirectives",
          "configuresRootWorkers",
          "firstDirectiveToken",
          "loadsRestrictedDynamicModule"
        ]
      }
    ]
  },
  "database": {
    "source": "https://vuln.go.dev/ID/GO-2026-6773.json"
  }
}
    Go Vulnerability Database · GO-2026-6773 · Updated 2026-10-19T21:31:37.806800912Z

All CVSS metrics

  • HIGH 7.1 v3.1 · CNA Primary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N
  • HIGH 7.1 v3.1 · NVD Secondary
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

References

Advisories

Technical & other

Sources: NVD · CVE.org · EPSS