FKIE_CVE-2026-40080

Vulnerability from fkie_nvd - Published: 2026-06-25 23:17 - Updated: 2026-06-26 16:09
Severity
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Open Redirect through a substring check rather than a host check at str_contains($referer, CACTI_PATH_URL). When the user's login_opts == '1' (redirect to referer after login), the function used $_SERVER['HTTP_REFERER'] directly. An attacker could craft a referer such as https://evil.com/cacti/. Where CACTI_PATH_URL is /cacti/, the substring matches and the user is redirected to evil.com after login. The pre-existing validate_redirect_url() helper at lib/html_utility.php performed proper validation but was not invoked from auth_login_redirect(). This issue has been fixed in version 1.2.31.
References
security-advisories@github.comhttps://github.com/Cacti/cacti/releases/tag/release%2F1.2.31
security-advisories@github.comhttps://github.com/Cacti/cacti/security/advisories/GHSA-6gr7-53g8-vchq
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/Cacti/cacti/security/advisories/GHSA-6gr7-53g8-vchq
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "cacti",
          "vendor": "Cacti",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.2.31"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Cacti is an open source performance and fault management framework. Versions 1.2.30 and prior are vulnerable to Open Redirect through a substring check rather than a host check at str_contains($referer, CACTI_PATH_URL). When the user\u0027s login_opts == \u00271\u0027 (redirect to referer after login), the function used $_SERVER[\u0027HTTP_REFERER\u0027] directly.  An attacker could craft a referer such as https://evil.com/cacti/. Where CACTI_PATH_URL is /cacti/, the substring matches and the user is redirected to evil.com after login. The pre-existing validate_redirect_url() helper at lib/html_utility.php performed proper validation but was not invoked from auth_login_redirect(). This issue has been fixed in version 1.2.31."
    }
  ],
  "id": "CVE-2026-40080",
  "lastModified": "2026-06-26T16:09:51.597",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-40080",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-26T14:08:58.081501Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-25T23:17:02.623",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Cacti/cacti/releases/tag/release%2F1.2.31"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/Cacti/cacti/security/advisories/GHSA-6gr7-53g8-vchq"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/Cacti/cacti/security/advisories/GHSA-6gr7-53g8-vchq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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