{"id":"CVE-2023-54423","aliases":["EUVD-2023-60729","GHSA-9j5w-2cqc-cwj9","GHSA-xcf8-w9c3-m6r5"],"status":"published","title":"OpenMage magento-lts before 20.2.0 Stored XSS via TinyMCE WYSIWYG Editor","description":"OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because the TinyMCE WYSIWYG editor fails to filter scripts in specially crafted HTML tags. Attackers can inject an img element with a malicious onmouseover attribute to execute scripts in the browsers of users viewing the rendered content.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-14","score":0.00249,"percentile":0.16427,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79","CWE-82"],"published":"2023-12-08T15:15:14Z","modified":"2026-11-14T02:56:13Z","fixes":[{"ecosystem":"Packagist","package":"openmage/magento-lts","fixed_in":["20.2.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"openmage/magento-lts","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.2.0"}]}]},{"source":"osv","ecosystem":"Packagist","package":"openmage/magento-lts","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"20.2.0"}]}],"versions":["1.9.1.1","1.9.2.0","1.9.2.1","1.9.2.2","1.9.2.3","1.9.2.4","1.9.3.0","1.9.3.1","v19.4.0","v19.4.1","v19.4.10","v19.4.11","v19.4.12","v19.4.13","v19.4.14","v19.4.15","v19.4.16","v19.4.17","v19.4.18","v19.4.19","v19.4.2","v19.4.20","v19.4.21","v19.4.22","v19.4.23","v19.4.3","v19.4.4","v19.4.5","v19.4.6","v19.4.7","v19.4.8","v19.4.9","v19.5.0","v19.5.0-rc1","v19.5.0-rc2","v19.5.0-rc3","v19.5.0-rc4","v19.5.0-rc5","v19.5.1","v19.5.2","v19.5.3","v20.0.0","v20.0.1","v20.0.10","v20.0.11","v20.0.12","v20.0.13","v20.0.14","v20.0.15","v20.0.16","v20.0.17","v20.0.18","v20.0.19","v20.0.2","v20.0.20","v20.0.3","v20.0.4","v20.0.5","v20.0.6","v20.0.7","v20.0.8","v20.1.0","v20.1.0-rc1","v20.1.0-rc2","v20.1.0-rc3","v20.1.0-rc4","v20.1.0-rc5","v20.1.0-rc6","v20.1.0-rc7","v20.1.1"]}],"products":[{"vendor":"openmage","product":"magento-lts"}],"references":[{"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-9j5w-2cqc-cwj9","tags":["vendor-advisory","advisory","web"]},{"url":"https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.2.0-stored-xss-via-tinymce-wysiwyg-editor","tags":["third-party-advisory","advisory"]},{"url":"https://github.com/OpenMage/magento-lts/pull/3220","tags":["web"]},{"url":"https://hackerone.com/reports/1948040","tags":["web"]},{"url":"https://github.com/OpenMage/magento-lts/releases/tag/v20.2.0","tags":["web"]},{"url":"https://github.com/advisories/GHSA-9j5w-2cqc-cwj9"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-54423","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xcf8-w9c3-m6r5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54423.json","tags":["advisory"]},{"url":"https://github.com/OpenMage/magento-lts","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-54423","title":"OpenMage magento-lts before 20.2.0 Stored XSS via TinyMCE WYSIWYG Editor","description":"OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because the TinyMCE WYSIWYG editor fails to filter scripts in specially crafted HTML tags. Attackers can inject an img element with a malicious onmouseover attribute to execute scripts in the browsers of users viewing the rendered content.","status":"published","published":"2026-11-13T09:37:04.518Z","modified":"2026-11-13T09:37:04.518Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-82"],"updated_at":"2026-11-13T10:27:12.184616Z"}],"euvd":[{"id":"EUVD-2023-60729","description":"OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because the TinyMCE WYSIWYG editor fails to filter scripts in specially crafted HTML tags. Attackers can inject an img element with a malicious onmouseover attribute to execute scripts in the browsers of users viewing the rendered content.","status":"published","published":"2026-11-13T09:37:04Z","modified":"2026-11-13T09:37:04Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L","level":"high"}],"updated_at":"2026-11-13T14:38:51.246778Z"}],"ghsa":[{"id":"GHSA-9j5w-2cqc-cwj9","title":"Magento LTS vulnerable to Stored XSS via TinyMCE WYSIWYG Editor","description":"From HackerOne report [#1948040](https://hackerone.com/reports/1948040) by Halit AKAYDIN (hltakydn)\n\n### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nThe TinyMCE WYSIWYG editor fails to filter scripts when rendering the HTML in specially crafted HTML tags.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nThis vulnerability was fixed in version 20.2.0 by upgrading TinyMCE to a recent version in https://github.com/OpenMage/magento-lts/pull/3220\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe WYSIWYG editor features could be disabled in the configuration. Possibly some WAF appliances would filter this attack.\n\n### References\n_Are there any links users can visit to find out more?_\n\nThe attack is simply an exploit of the \"onmouseover\" attribute of an `img` element as described on [OWASP XSS Filter Evasion](https://cheatsheetseries.owasp.org/cheatsheets/XSS_Filter_Evasion_Cheat_Sheet.html)","status":"published","published":"2023-12-08T15:15:14Z","modified":"2023-12-08T15:15:14Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:37:24.593982Z"},{"id":"GHSA-xcf8-w9c3-m6r5","title":"OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because...","description":"OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because the TinyMCE WYSIWYG editor fails to filter scripts in specially crafted HTML tags. Attackers can inject an img element with a malicious onmouseover attribute to execute scripts in the browsers of users viewing the rendered content.","status":"published","published":"2026-11-13T12:31:11Z","modified":"2026-11-13T12:31:17Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-82"],"updated_at":"2026-11-13T12:50:12.078093Z"}],"nvd":[{"id":"CVE-2023-54423","description":"OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because the TinyMCE WYSIWYG editor fails to filter scripts in specially crafted HTML tags. Attackers can inject an img element with a malicious onmouseover attribute to execute scripts in the browsers of users viewing the rendered content.","status":"published","published":"2026-11-13T10:17:23.227Z","modified":"2026-11-13T10:17:23.227Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"high","assessor":"primary"}],"cwes":["CWE-82"],"updated_at":"2026-11-13T11:35:38.52146Z"}],"osv":[{"id":"CVE-2023-54423","title":"OpenMage magento-lts before 20.2.0 Stored XSS via TinyMCE WYSIWYG Editor","description":"OpenMage magento-lts before 20.2.0 contains a stored cross-site scripting vulnerability because the TinyMCE WYSIWYG editor fails to filter scripts in specially crafted HTML tags. Attackers can inject an img element with a malicious onmouseover attribute to execute scripts in the browsers of users viewing the rendered content.","status":"published","published":"2026-11-13T09:37:04.518Z","modified":"2026-11-14T02:45:20.473676598Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L","level":"high"}],"cwes":["CWE-82"],"updated_at":"2026-11-14T03:11:37.908985Z"},{"id":"GHSA-9j5w-2cqc-cwj9","title":"Magento LTS vulnerable to Stored XSS via TinyMCE WYSIWYG Editor","description":"From HackerOne report [#1948040](https://hackerone.com/reports/1948040) by Halit AKAYDIN (hltakydn)\n\n### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nThe TinyMCE WYSIWYG editor fails to filter scripts when rendering the HTML in specially crafted HTML tags.\n\n### Patches\n_Has the problem been patched? What versions should users upgrade to?_\n\nThis vulnerability was fixed in version 20.2.0 by upgrading TinyMCE to a recent version in https://github.com/OpenMage/magento-lts/pull/3220\n\n### Workarounds\n_Is there a way for users to fix or remediate the vulnerability without upgrading?_\n\nThe WYSIWYG editor features could be disabled in the configuration. Possibly some WAF appliances would filter this attack.\n\n### References\n_Are there any links users can visit to find out more?_\n\nThe attack is simply an exploit of the \"onmouseover\" attribute of an `img` element as described on [OWASP XSS Filter Evasion](https://cheatsheetseries.owasp.org/cheatsheets/XSS_Filter_Evasion_Cheat_Sheet.html)","status":"published","published":"2023-12-08T15:15:14Z","modified":"2026-11-14T02:56:13.515386021Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-14T03:11:06.681237Z"}]}}