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CVE-2026-84258

Status: DeferredHigh (8.8)—
Severity8.8High · CVSS 3.1
Exploitation probability0.30 %higher than 22% of CVEs
Active exploitationNonot in the CISA catalog
Public exploitNot knownno public code found

The click5 CRM add-on to Ninja Forms WordPress plugin through 1.0.1 does not sanitise and escape content submitted through an unauthenticated endpoint before outputting it back in an admin page, leading to Stored XSS which could be used against high privilege users such as admin.

CVSS

Base score
8.8
Version
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days
0.30 %
Percentile among all scored CVEs
22
Score date
10/21/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

XSS almacenado (CWE-79) en endpoint no autenticado de WordPress. Vector CVSS con UI:R y C:H/I:H/A:H confirma T1189. Impacto: ejecución JavaScript (T1059.007) en navegador del admin y potencial compromiso de cuenta (T1078) mediante robo de sesión.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

User TrainingRestrict Web-Based ContentApplication Developer GuidanceActive Directory ConfigurationUser Account ManagementPrivileged Account Management

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Click5 — Click5 CRMAI

CWEs

References

Show 1 references

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-84258",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-11T11:25:44.135204Z"
        }
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          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "contact@wpscan.com",
      "affectedData": [
        {
          "vendor": "Unknown",
          "product": "click5 CRM add-on to Ninja Forms",
          "versions": [
            {
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              "version": "0",
              "versionType": "semver",
              "lessThanOrEqual": "1.0.1"
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  "published": "2026-10-11T07:17:25.287",
  "references": [
    {
      "url": "https://wpscan.com/vulnerability/3eae023f-a0fe-4313-9aee-18a8933eedb3/",
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    }
  ],
  "lastModified": "2026-10-13T20:36:00.850",
  "sourceIdentifier": "contact@wpscan.com"
}