XSS in Felixschwarz Mjml-Python
CVE-2024-26151
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 `<script>` 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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:L.
EPSS exploit prediction
EPSS: 0.006 (47.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Felixschwarz Mjml-Python — versions 0.10.0, = 0.10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/FelixSchwarz/mjml-python/security/advisories/GHSA-578p-fxmm-6229 (Vendor Advisory)
- github.com/FelixSchwarz/mjml-python/issues/52 (Exploit, Issue Tracking)
- github.com/FelixSchwarz/mjml-python/commit/84c495da20a91640a1ca551ace17df7f3be6… (Patch)
- github.com/FelixSchwarz/mjml-python/commit/8d410b7a500703080bb14ed7e3d2663fe167… (Patch)
- github.com/FelixSchwarz/mjml-python/releases/tag/v0.11.0 (Release Notes)
- af854a3a-2127-422b-91ae-364da2661108 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-26151?
- CVE-2024-26151 is a high-severity vulnerability in Felixschwarz Mjml-Python, classified under Improper Input Validation. CVSS score: 8.2/10. Published 2024-02-22.
- How severe is CVE-2024-26151?
- High severity. CVSS v3 base score is 8.2 out of 10.
- Is CVE-2024-26151 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.