CVE-2021-36845

{
  "id": "CVE-2021-36845",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-36845",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-03-28T16:49:24.310788Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "audit@patchstack.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 6.9,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 1.7
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 4.8,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.7,
        "exploitabilityScore": 1.7
      }
    ]
  },
  "affected": [
    {
      "source": "audit@patchstack.com",
      "affectedData": [
        {
          "vendor": "YITH",
          "product": "YITH Maintenance Mode (WordPress plugin)",
          "versions": [
            {
              "status": "affected",
              "version": "<= 1.3.8",
              "versionType": "custom",
              "lessThanOrEqual": "1.3.8"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-09-27T16:15:09.377",
  "references": [
    {
      "url": "https://patchstack.com/database/vulnerability/yith-maintenance-mode/wordpress-yith-maintenance-mode-plugin-1-3-8-multiple-authenticated-stored-cross-site-scripting-xss-vulnerabilities",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "audit@patchstack.com"
    },
    {
      "url": "https://wordpress.org/plugins/yith-maintenance-mode/#developers",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "audit@patchstack.com"
    },
    {
      "url": "https://patchstack.com/database/vulnerability/yith-maintenance-mode/wordpress-yith-maintenance-mode-plugin-1-3-8-multiple-authenticated-stored-cross-site-scripting-xss-vulnerabilities",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://wordpress.org/plugins/yith-maintenance-mode/#developers",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "audit@patchstack.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Multiple Authenticated Stored Cross-Site Scripting (XSS) vulnerabilities in YITH Maintenance Mode (WordPress plugin) versions <= 1.3.8, there are 46 vulnerable parameters that were missed by the vendor while patching the 1.3.7 version to 1.3.8. Vulnerable parameters: 1 - \"Newsletter\" tab, &yith_maintenance_newsletter_submit_label parameter: payload should start with a single quote (') symbol to break the context, i.e.: NOTIFY ME' autofocus onfocus=alert(/Visse/);// v=' - this payload will be auto triggered while admin visits this page/tab. 2 - \"General\" tab issues, vulnerable parameters: &yith_maintenance_message, &yith_maintenance_custom_style, &yith_maintenance_mascotte, &yith_maintenance_title_font[size], &yith_maintenance_title_font[family], &yith_maintenance_title_font[color], &yith_maintenance_paragraph_font[size], &yith_maintenance_paragraph_font[family], &yith_maintenance_paragraph_font[color], &yith_maintenance_border_top. 3 - \"Background\" tab issues, vulnerable parameters: &yith_maintenance_background_image, &yith_maintenance_background_color. 4 - \"Logo\" tab issues, vulnerable parameters: &yith_maintenance_logo_image, &yith_maintenance_logo_tagline, &yith_maintenance_logo_tagline_font[size], &yith_maintenance_logo_tagline_font[family], &yith_maintenance_logo_tagline_font[color]. 5 - \"Newsletter\" tab issues, vulnerable parameters: &yith_maintenance_newsletter_email_font[size], &yith_maintenance_newsletter_email_font[family], &yith_maintenance_newsletter_email_font[color], &yith_maintenance_newsletter_submit_font[size], &yith_maintenance_newsletter_submit_font[family], &yith_maintenance_newsletter_submit_font[color], &yith_maintenance_newsletter_submit_background, &yith_maintenance_newsletter_submit_background_hover, &yith_maintenance_newsletter_title, &yith_maintenance_newsletter_action, &yith_maintenance_newsletter_email_label, &yith_maintenance_newsletter_email_name, &yith_maintenance_newsletter_submit_label, &yith_maintenance_newsletter_hidden_fields. 6 - \"Socials\" tab issues, vulnerable parameters: &yith_maintenance_socials_facebook, &yith_maintenance_socials_twitter, &yith_maintenance_socials_gplus, &yith_maintenance_socials_youtube, &yith_maintenance_socials_rss, &yith_maintenance_socials_skype, &yith_maintenance_socials_email, &yith_maintenance_socials_behance, &yith_maintenance_socials_dribble, &yith_maintenance_socials_flickr, &yith_maintenance_socials_instagram, &yith_maintenance_socials_pinterest, &yith_maintenance_socials_tumblr, &yith_maintenance_socials_linkedin."
    },
    {
      "lang": "es",
      "value": "Múltiples vulnerabilidades de tipo Cross-Site Scripting (XSS) Almacenado y Autenticado en YITH Maintenance Mode (plugin de WordPress) versiones anteriores a 1.3.8 incluyéndola, hay 46 parámetros vulnerables que fueron pasados por alto por el proveedor mientras parcheaba la versión 1.3.7 a la 1.3.8. Parámetros vulnerables: 1 - Pestaña \"Newsletter\", parámetro &amp;yith_maintenance_newsletter_submit_label: el payload debe comenzar con un símbolo de comillas simples (') para romper el contexto, es decir: NOTIFY ME' autofocus onfocus=alert(/Visse/);// v=' - este payload se autodesencadenará mientras el administrador visite esta página/pestaña. 2 - Problemas de la pestaña \"General\", parámetros vulnerables: &amp;yith_maintenance_message, &amp;yith_maintenance_custom_style, &amp;yith_maintenance_mascotte, &amp;yith_maintenance_title_font[size], &amp;yith_maintenance_title_font[family], &amp;yith_maintenance_title_font[color], &amp;yith_maintenance_paragraph_font[size], &amp;yith_maintenance_paragraph_font[family], &amp;yith_maintenance_paragraph_font[color], &amp;yith_maintenance_border_top. 3 - Problemas con la pestaña \"Background\", parámetros vulnerables: &amp;yith_maintenance_background_image, &amp;yith_maintenance_background_color. 4 - Problemas con la pestaña \"Logo\", parámetros vulnerables: &amp;yith_maintenance_logo_image, &amp;yith_maintenance_logo_tagline_font, &amp;yith_maintenance_logo_tagline_font[size], &amp;yith_maintenance_logo_tagline_font[family], &amp;yith_maintenance_logo_tagline_font[color]. 5 - Problemas con la pestaña \"Newsletter\", parámetros vulnerables: &amp;yith_maintenance_newsletter_email_font[size], &amp;yith_maintenance_newsletter_email_font[family], &amp;yith_maintenance_newsletter_email_font[color], &amp;yith_maintenance_newsletter_submit_font[size], &amp;yith_maintenance_newsletter_submit_font[family], &amp;yith_maintenance_newsletter_submit_font[color], &amp;yith_maintenance_newsletter_submit_background, &amp;yith_maintenance_newsletter_submit_background_hover, &amp;yith_maintenance_newsletter_title, &amp;yith_maintenance_newsletter_action, &amp;yith_maintenance_newsletter_email_label, &amp;yith_maintenance_newsletter_email_name, &amp;yith_maintenance_newsletter_submit_label, &amp;yith_maintenance_newsletter_hidden_fields. 6 - Problemas de la pestaña \"Socials\", parámetros vulnerables: &amp;yith_maintenance_socials_facebook, &amp;yith_maintenance_socials_twitter, &amp;yith_maintenance_socials_gplus, &amp;yith_maintenance_socials_youtube, &amp;yith_maintenance_socials_rss, &amp;yith_maintenance_socials_skype, &amp;yith_maintenance_socials_email, &amp;yith_maintenance_socials_behance, &amp;yith_maintenance_socials_dribble, &amp;yith_maintenance_socials_flickr, &amp;yith_maintenance_socials_instagram, &amp;yith_maintenance_socials_pinterest, &amp;yith_maintenance_socials_tumblr, &amp;yith_maintenance_socials_linkedin"
    }
  ],
  "lastModified": "2026-06-17T03:59:30.450",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:yithemes:yith_maintenance_mode:*:*:*:*:*:wordpress:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BC34C991-B0F5-4FB7-BA2A-4B5DF326E284",
              "versionEndIncluding": "1.3.8"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "audit@patchstack.com"
}