FKIE_CVE-2026-77352

Vulnerability from fkie_nvd - Published: 2026-08-31 22:17 - Updated: 2026-09-01 15:17
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Summary
Wallos is an open-source, self-hostable personal subscription tracker. From version 2.0.0 to before version 5.0.0, any authenticated Wallos user (no admin rights required) can make the server open arbitrary outbound SMTP connections to internal/link-local addresses, by setting the SMTP host of their personal email notifications to an internal IP. The per-user notification settings endpoint (endpoints/notifications/saveemailnotifications.php) performs no SSRF validation, and the notification cron (endpoints/cronjobs/sendnotifications.php) feeds that user-controlled host straight into PHPMailer ($mail->Host = $email['smtpAddress']). When the user's subscription notification fires, the server connects to the chosen host:port. This issue has been patched in version 5.0.0.
References
security-advisories@github.comhttps://github.com/ellite/Wallos/commit/11eaf402e841a628c68a805694227ce66c45f6f3
security-advisories@github.comhttps://github.com/ellite/Wallos/releases/tag/v5.0.0
security-advisories@github.comhttps://github.com/ellite/Wallos/security/advisories/GHSA-c75x-9vj6-57qj
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Wallos",
          "vendor": "ellite",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 5.0.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Wallos is an open-source, self-hostable personal subscription tracker. From version 2.0.0 to before version 5.0.0, any authenticated Wallos user (no admin rights required) can make the server open arbitrary outbound SMTP connections to internal/link-local addresses, by setting the SMTP host of their personal email notifications to an internal IP. The per-user notification settings endpoint (endpoints/notifications/saveemailnotifications.php) performs no SSRF validation, and the notification cron (endpoints/cronjobs/sendnotifications.php) feeds that user-controlled host straight into PHPMailer ($mail-\u003eHost = $email[\u0027smtpAddress\u0027]). When the user\u0027s subscription notification fires, the server connects to the chosen host:port. This issue has been patched in version 5.0.0."
    }
  ],
  "id": "CVE-2026-77352",
  "lastModified": "2026-09-01T15:17:27.483",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-77352",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-01T14:15:10.690747Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-31T22:17:20.607",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/ellite/Wallos/commit/11eaf402e841a628c68a805694227ce66c45f6f3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/ellite/Wallos/releases/tag/v5.0.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/ellite/Wallos/security/advisories/GHSA-c75x-9vj6-57qj"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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