FKIE_CVE-2026-115479

Vulnerability from fkie_nvd - Published: 2026-10-23 14:17 - Updated: 2026-10-23 16:28
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Summary
baserCMS is a website development framework. In versions 5.2.5 before 5.3.2 and 5.4.0 before 5.4.2, an unauthenticated visitor can supply a comma-separated address list in a public mail form's email field and cause a single auto-reply to be addressed to multiple third parties. MailMessageMailer::sendFormToUser() passes the visitor-controlled userMail value to parseAndNormalizeMailAddresses(), which splits it with explode(',') and supplies every resulting address to setTo(). Newly created forms with an email-type field are affected when the separate, optional VALID_EMAIL server-side validation is not enabled; browser type=email validation does not prevent crafted requests. The bundled contact form enables VALID_EMAIL and is not affected. The auto-reply uses the site's sender identity and includes partially attacker-controlled content, allowing abuse of the site to deliver unsolicited mail. This issue has been patched in versions 5.3.2 and 5.4.2.
References
security-advisories@github.comhttps://github.com/baserproject/basercms/commit/99e6257c9d5e2fa2bff2351defcb9fb37f69daf1
security-advisories@github.comhttps://github.com/baserproject/basercms/releases/tag/5.3.2
security-advisories@github.comhttps://github.com/baserproject/basercms/releases/tag/5.4.2
security-advisories@github.comhttps://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "basercms",
          "vendor": "baserproject",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 5.2.5, \u003c 5.3.2"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.4.0, \u003c 5.4.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "baserCMS is a website development framework. In versions 5.2.5 before 5.3.2 and 5.4.0 before 5.4.2, an unauthenticated visitor can supply a comma-separated address list in a public mail form\u0027s email field and cause a single auto-reply to be addressed to multiple third parties. MailMessageMailer::sendFormToUser() passes the visitor-controlled userMail value to parseAndNormalizeMailAddresses(), which splits it with explode(\u0027,\u0027) and supplies every resulting address to setTo(). Newly created forms with an email-type field are affected when the separate, optional VALID_EMAIL server-side validation is not enabled; browser type=email validation does not prevent crafted requests. The bundled contact form enables VALID_EMAIL and is not affected. The auto-reply uses the site\u0027s sender identity and includes partially attacker-controlled content, allowing abuse of the site to deliver unsolicited mail. This issue has been patched in versions 5.3.2 and 5.4.2."
    }
  ],
  "id": "CVE-2026-115479",
  "lastModified": "2026-10-23T16:28:32.357",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-23T14:17:52.010",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baserproject/basercms/commit/99e6257c9d5e2fa2bff2351defcb9fb37f69daf1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baserproject/basercms/releases/tag/5.3.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baserproject/basercms/releases/tag/5.4.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/baserproject/basercms/security/advisories/GHSA-w47c-4g8m-gjv9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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