« Back to list

CVE-2026-23927

Status: AnalyzedMedium (5.1)—

A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session.

CVSS

Exploitation probability (EPSS)

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).

Affected technologies (1)

Zabbix — Zabbix

CWEs

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2026-23927",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-23927",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-06T13:00:05.597736Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 1.2
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security@zabbix.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 5.1,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "PRESENT",
          "privilegesRequired": "HIGH",
          "subIntegrityImpact": "HIGH",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "NONE",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "security@zabbix.com",
      "affectedData": [
        {
          "repo": "https://git.zabbix.com/",
          "vendor": "Zabbix",
          "modules": [
            "Agent2"
          ],
          "product": "Zabbix",
          "versions": [
            {
              "status": "affected",
              "changes": [
                {
                  "at": "6.0.45",
                  "status": "unaffected"
                }
              ],
              "version": "6.0.0",
              "versionType": "git",
              "lessThanOrEqual": "6.0.44"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "7.0.24",
                  "status": "unaffected"
                }
              ],
              "version": "7.0.0",
              "versionType": "git",
              "lessThanOrEqual": "7.0.23"
            },
            {
              "status": "affected",
              "changes": [
                {
                  "at": "7.4.8",
                  "status": "unaffected"
                }
              ],
              "version": "7.4.0",
              "versionType": "git",
              "lessThanOrEqual": "7.4.7"
            }
          ],
          "defaultStatus": "unknown"
        }
      ]
    }
  ],
  "published": "2026-05-06T08:16:02.940",
  "references": [
    {
      "url": "https://support.zabbix.com/browse/ZBX-27759",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@zabbix.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@zabbix.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-522"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A user able to connect to Agent 2 can inject an Oracle TNS connection string via the 'service' parameter. This can lead to Agent 2 connecting to an attacker-controlled server and leaking Oracle database credentials if they are saved in a named session."
    }
  ],
  "lastModified": "2026-09-18T15:26:56.730",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1E7AE210-21FF-41EE-8130-339B9541C3D7",
              "versionEndExcluding": "6.0.45",
              "versionStartIncluding": "6.0.0"
            },
            {
              "criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "44821417-4549-40BA-95DB-79C174EB9D5A",
              "versionEndExcluding": "7.0.24",
              "versionStartIncluding": "7.0.0"
            },
            {
              "criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "05916880-BA46-450D-A180-40D10B2C27C5",
              "versionEndExcluding": "7.4.8",
              "versionStartIncluding": "7.4.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@zabbix.com"
}