CVE-2021-36845 (GCVE-0-2021-36845)
Vulnerability from cvelistv5
Published
2021-09-27 15:36
Modified
2026-04-28 16:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-79 - Cross-site Scripting (XSS)
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| YITH | YITH Maintenance Mode (WordPress plugin) |
Version: <= 1.3.8 < |
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\\\"Newsletter\\\" tab issues, vulnerable parameters: \u0026yith_maintenance_newsletter_email_font[size], \u0026yith_maintenance_newsletter_email_font[family], \u0026yith_maintenance_newsletter_email_font[color], \u0026yith_maintenance_newsletter_submit_font[size], \u0026yith_maintenance_newsletter_submit_font[family], \u0026yith_maintenance_newsletter_submit_font[color], \u0026yith_maintenance_newsletter_submit_background, \u0026yith_maintenance_newsletter_submit_background_hover, \u0026yith_maintenance_newsletter_title, \u0026yith_maintenance_newsletter_action, \u0026yith_maintenance_newsletter_email_label, \u0026yith_maintenance_newsletter_email_name, \u0026yith_maintenance_newsletter_submit_label, \u0026yith_maintenance_newsletter_hidden_fields. 6 - \\\"Socials\\\" tab issues, vulnerable parameters: \u0026yith_maintenance_socials_facebook, \u0026yith_maintenance_socials_twitter, \u0026yith_maintenance_socials_gplus, \u0026yith_maintenance_socials_youtube, \u0026yith_maintenance_socials_rss, \u0026yith_maintenance_socials_skype, \u0026yith_maintenance_socials_email, \u0026yith_maintenance_socials_behance, \u0026yith_maintenance_socials_dribble, \u0026yith_maintenance_socials_flickr, \u0026yith_maintenance_socials_instagram, \u0026yith_maintenance_socials_pinterest, \u0026yith_maintenance_socials_tumblr, \u0026yith_maintenance_socials_linkedin.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Cross-site Scripting (XSS)\"}]}], \"providerMetadata\": {\"orgId\": \"21595511-bba5-4825-b968-b78d1f9984a3\", \"shortName\": \"Patchstack\", \"dateUpdated\": \"2026-04-28T16:07:34.322Z\"}, \"x_legacyV4Record\": {\"credit\": [{\"lang\": \"eng\", \"value\": \"Original researcher - 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Vulnerable parameters: 1 - \\\"Newsletter\\\" tab, \u0026yith_maintenance_newsletter_submit_label parameter: payload should start with a single quote (\u0027) symbol to break the context, i.e.: NOTIFY ME\u0027 autofocus onfocus=alert(/Visse/);// v=\u0027 - this payload will be auto triggered while admin visits this page/tab. 2 - \\\"General\\\" tab issues, vulnerable parameters: \u0026yith_maintenance_message, \u0026yith_maintenance_custom_style, \u0026yith_maintenance_mascotte, \u0026yith_maintenance_title_font[size], \u0026yith_maintenance_title_font[family], \u0026yith_maintenance_title_font[color], \u0026yith_maintenance_paragraph_font[size], \u0026yith_maintenance_paragraph_font[family], \u0026yith_maintenance_paragraph_font[color], \u0026yith_maintenance_border_top. 3 - \\\"Background\\\" tab issues, vulnerable parameters: \u0026yith_maintenance_background_image, \u0026yith_maintenance_background_color. 4 - \\\"Logo\\\" tab issues, vulnerable parameters: \u0026yith_maintenance_logo_image, \u0026yith_maintenance_logo_tagline, \u0026yith_maintenance_logo_tagline_font[size], \u0026yith_maintenance_logo_tagline_font[family], \u0026yith_maintenance_logo_tagline_font[color]. 5 - \\\"Newsletter\\\" tab issues, vulnerable parameters: \u0026yith_maintenance_newsletter_email_font[size], \u0026yith_maintenance_newsletter_email_font[family], \u0026yith_maintenance_newsletter_email_font[color], \u0026yith_maintenance_newsletter_submit_font[size], \u0026yith_maintenance_newsletter_submit_font[family], \u0026yith_maintenance_newsletter_submit_font[color], \u0026yith_maintenance_newsletter_submit_background, \u0026yith_maintenance_newsletter_submit_background_hover, \u0026yith_maintenance_newsletter_title, \u0026yith_maintenance_newsletter_action, \u0026yith_maintenance_newsletter_email_label, \u0026yith_maintenance_newsletter_email_name, \u0026yith_maintenance_newsletter_submit_label, \u0026yith_maintenance_newsletter_hidden_fields. 6 - \\\"Socials\\\" tab issues, vulnerable parameters: \u0026yith_maintenance_socials_facebook, \u0026yith_maintenance_socials_twitter, \u0026yith_maintenance_socials_gplus, \u0026yith_maintenance_socials_youtube, \u0026yith_maintenance_socials_rss, \u0026yith_maintenance_socials_skype, \u0026yith_maintenance_socials_email, \u0026yith_maintenance_socials_behance, \u0026yith_maintenance_socials_dribble, \u0026yith_maintenance_socials_flickr, \u0026yith_maintenance_socials_instagram, \u0026yith_maintenance_socials_pinterest, \u0026yith_maintenance_socials_tumblr, \u0026yith_maintenance_socials_linkedin.\"}]}, \"problemtype\": {\"problemtype_data\": [{\"description\": [{\"lang\": \"eng\", \"value\": \"CWE-79 Cross-site Scripting (XSS)\"}]}]}, \"data_version\": \"4.0\", \"CVE_data_meta\": {\"ID\": \"CVE-2021-36845\", \"STATE\": \"PUBLIC\", \"TITLE\": \"YITH Maintenance Mode (WordPress plugin) \u003c= 1.3.8 - Multiple Authenticated Stored Cross-Site Scripting (XSS) vulnerabilities\", \"ASSIGNER\": \"audit@patchstack.com\", \"DATE_PUBLIC\": \"2021-09-23T11:55:00.000Z\"}}}}",
"cveMetadata": "{\"cveId\": \"CVE-2021-36845\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-28T16:07:34.322Z\", \"dateReserved\": \"2021-07-19T00:00:00.000Z\", \"assignerOrgId\": \"21595511-bba5-4825-b968-b78d1f9984a3\", \"datePublished\": \"2021-09-27T15:36:56.716Z\", \"assignerShortName\": \"Patchstack\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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