{"id":"CVE-2024-56510","aliases":["EUVD-2024-3621","GHSA-x52f-h5g4-8qv5"],"status":"published","title":"Marp Core allows XSS by improper neutralization of HTML sanitization","description":"@marp-team/marp-core is the core for Marp, which is the ecosystem to write your presentation with plain Markdown. Marp Core from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization. Marp Core v3.9.1 and v4.0.1 have been patched to fix that. If you are unable to update the package immediately, disable all HTML tags by setting html: false option in the Marp class constructor.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00316,"percentile":0.24669,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-79"],"published":"2024-12-26T18:25:25Z","modified":"2026-10-28T02:31:05Z","fixes":[{"ecosystem":"npm","package":"@marp-team/marp-core","fixed_in":["3.9.1","4.0.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@marp-team/marp-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.2"},{"last_affected":"3.9.0"},{"fixed":"3.9.1"}]}]},{"source":"ghsa","ecosystem":"npm","package":"@marp-team/marp-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"last_affected":"4.0.0"},{"fixed":"4.0.1"}]}],"versions":["4.0.0"]},{"source":"osv","ecosystem":"npm","package":"@marp-team/marp-core","ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.2"},{"fixed":"3.9.1"}]}]},{"source":"osv","ecosystem":"npm","package":"@marp-team/marp-core","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.0.1"}]}],"versions":["4.0.0"]}],"products":[{"vendor":"marp-team","product":"marp-core"}],"references":[{"url":"https://github.com/marp-team/marp-core/security/advisories/GHSA-x52f-h5g4-8qv5","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/marp-team/marp-core/pull/282","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/marp-team/marp-core/commit/61a1def244d1b6faa8e2c0be97ec0b68cab3ab49","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/marp-team/marp-core/releases/tag/v3.9.1","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/marp-team/marp-core/releases/tag/v4.0.1","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-56510","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-x52f-h5g4-8qv5"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/56xxx/CVE-2024-56510.json","tags":["advisory"]},{"url":"https://github.com/marp-team/marp-core","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-56510","title":"Marp Core allows XSS by improper neutralization of HTML sanitization","description":"@marp-team/marp-core is the core for Marp, which is the ecosystem to write your presentation with plain Markdown. Marp Core from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization. Marp Core v3.9.1 and v4.0.1 have been patched to fix that. If you are unable to update the package immediately, disable all HTML tags by setting html: false option in the Marp class constructor.","status":"published","published":"2024-12-26T20:56:24.743Z","modified":"2024-12-27T16:47:08.602Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:33:57.638551Z"}],"euvd":[{"id":"EUVD-2024-3621","description":"@marp-team/marp-core is the core for Marp, which is the ecosystem to write your presentation with plain Markdown. Marp Core from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization. Marp Core v3.9.1 and v4.0.1 have been patched to fix that. If you are unable to update the package immediately, disable all HTML tags by setting html: false option in the Marp class constructor.","status":"published","published":"2024-12-26T20:56:24Z","modified":"2024-12-27T16:47:08Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"updated_at":"2026-11-03T00:04:32.701542Z"}],"ghsa":[{"id":"GHSA-x52f-h5g4-8qv5","title":"Marp Core allows XSS by improper neutralization of HTML sanitization","description":"Marp Core ([`@marp-team/marp-core`](https://www.npmjs.com/package/@marp-team/marp-core)) from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS)  due to improper neutralization of HTML sanitization.\n\n### Impact\n\nMarp Core includes an HTML sanitizer with allowlist support. In the affected versions, the built-in allowlist is enabled by default. When the allowlist is active, if insufficient HTML comments are included, the sanitizer may fail to properly sanitize HTML content and lead cross-site scripting (XSS).\n\n### Patches\n\nMarp Core [v3.9.1](https://github.com/marp-team/marp-core/releases/tag/v3.9.1) and [v4.0.1](https://github.com/marp-team/marp-core/releases/tag/v4.0.1) have been patched to fix that.\n\n### Workarounds\n\nIf you are unable to update the package immediately, disable all HTML tags by setting `html: false` option in the `Marp` class constructor.\n\n```javascript\nconst marp = new Marp({ html: false })\n```\n\n### References\n\n- [CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')](https://cwe.mitre.org/data/definitions/79.html)\n- https://github.com/marp-team/marp-core/pull/282\n- https://github.com/marp-team/marp-core/commit/61a1def244d1b6faa8e2c0be97ec0b68cab3ab49\n\n### Credits\n\nThanks to @Ry0taK for finding out this vulnerability.","status":"published","published":"2024-12-26T18:25:25Z","modified":"2024-12-26T21:46:03Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:38:26.167657Z"}],"nvd":[{"id":"CVE-2024-56510","description":"@marp-team/marp-core is the core for Marp, which is the ecosystem to write your presentation with plain Markdown. Marp Core from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization. Marp Core v3.9.1 and v4.0.1 have been patched to fix that. If you are unable to update the package immediately, disable all HTML tags by setting html: false option in the Marp class constructor.","status":"published","published":"2024-12-26T21:15:06.743Z","modified":"2026-06-17T08:12:16.213Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:10:41.091507Z"}],"osv":[{"id":"CVE-2024-56510","title":"Marp Core allows XSS by improper neutralization of HTML sanitization","description":"@marp-team/marp-core is the core for Marp, which is the ecosystem to write your presentation with plain Markdown. Marp Core from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS) due to improper neutralization of HTML sanitization. Marp Core v3.9.1 and v4.0.1 have been patched to fix that. If you are unable to update the package immediately, disable all HTML tags by setting html: false option in the Marp class constructor.","status":"published","published":"2024-12-26T20:56:24.743Z","modified":"2026-10-28T02:31:05.679705571Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:44:44.777182Z"},{"id":"GHSA-x52f-h5g4-8qv5","title":"Marp Core allows XSS by improper neutralization of HTML sanitization","description":"Marp Core ([`@marp-team/marp-core`](https://www.npmjs.com/package/@marp-team/marp-core)) from v3.0.2 to v3.9.0 and v4.0.0, are vulnerable to cross-site scripting (XSS)  due to improper neutralization of HTML sanitization.\n\n### Impact\n\nMarp Core includes an HTML sanitizer with allowlist support. In the affected versions, the built-in allowlist is enabled by default. When the allowlist is active, if insufficient HTML comments are included, the sanitizer may fail to properly sanitize HTML content and lead cross-site scripting (XSS).\n\n### Patches\n\nMarp Core [v3.9.1](https://github.com/marp-team/marp-core/releases/tag/v3.9.1) and [v4.0.1](https://github.com/marp-team/marp-core/releases/tag/v4.0.1) have been patched to fix that.\n\n### Workarounds\n\nIf you are unable to update the package immediately, disable all HTML tags by setting `html: false` option in the `Marp` class constructor.\n\n```javascript\nconst marp = new Marp({ html: false })\n```\n\n### References\n\n- [CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')](https://cwe.mitre.org/data/definitions/79.html)\n- https://github.com/marp-team/marp-core/pull/282\n- https://github.com/marp-team/marp-core/commit/61a1def244d1b6faa8e2c0be97ec0b68cab3ab49\n\n### Credits\n\nThanks to @Ry0taK for finding out this vulnerability.","status":"published","published":"2024-12-26T18:25:25Z","modified":"2024-12-26T21:45:58Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:46:59.484835Z"}]}}