{"cve":"CVE-2024-26151","nvd":{"published":"2024-02-22T19:15:09.300","modified":"2026-06-17T07:17:12.420","status":"Analyzed","description":"The `mjml` PyPI package, found at the `FelixSchwarz/mjml-python` GitHub repo, is an unofficial Python port of MJML, a markup language created by Mailjet. All users of `FelixSchwarz/mjml-python` who insert untrusted data into mjml templates unless that data is checked in a very strict manner. User input like `&lt;script&gt;` would be rendered as `<script>` in the final HTML output. The attacker must be able to control some data which is later injected in an mjml template which is then send out as email to other users. The attacker could control contents of email messages sent through the platform. The problem has been fixed in version 0.11.0 of this library. Versions before 0.10.0 are not affected by this security issue. As a workaround, ensure that potentially untrusted user input does not contain any sequences which could be rendered as HTML.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","score":5.4},"cwes":["CWE-79","CWE-20"],"references":["https://github.com/FelixSchwarz/mjml-python/commit/84c495da20a91640a1ca551ace17df7f3be644aa","https://github.com/FelixSchwarz/mjml-python/commit/8d410b7a500703080bb14ed7e3d2663fe16767e6","https://github.com/FelixSchwarz/mjml-python/issues/52","https://github.com/FelixSchwarz/mjml-python/releases/tag/v0.11.0","https://github.com/FelixSchwarz/mjml-python/security/advisories/GHSA-578p-fxmm-6229"],"products":["felixschwarz:mjml-python"],"source":"nvd","synced_at":"2026-10-19T21:45:59.823092188+00:00"},"epss":{"cve":"CVE-2024-26151","score":0.00621,"percentile":0.49782,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-578p-fxmm-6229","url":"https://osv.dev/vulnerability/GHSA-578p-fxmm-6229","summary":"Potentially untrusted input is rendered as HTML in final output","modified":"2026-09-10T03:50:09.830349084Z","packages":[{"ecosystem":"PyPI","name":"mjml","purl":"pkg:pypi/mjml","ranges":[">=0.10.0 <0.11.0"],"fixed":["0.11.0"]}]},{"id":"PYSEC-2026-1631","url":"https://osv.dev/vulnerability/PYSEC-2026-1631","summary":"Potentially untrusted input is rendered as HTML in final output","modified":"2026-07-07T17:47:43.436015626Z","packages":[{"ecosystem":"PyPI","name":"mjml","purl":"pkg:pypi/mjml","ranges":[">=0.10.0 <0.11.0"],"fixed":["0.11.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}