Mezzanine CMS has a Stored Cross-Site Scripting (XSS) vulnerability in the displayable_links_js function
Mezzanine CMS, in versions prior to 6.1.1, contains a Stored Cross-Site Scripting (XSS) vulnerability in the admin interface. The vulnerability exists in the "displayable_links_js" function, which fails to properly sanitize blog post titles before including them in JSON responses served via "/admin/displayable_links.js". An authenticated admin user can create a blog post with a malicious JavaScript payload in the title field, then trick another admin user into clicking a direct link to the "/admin/displayable_links.js" endpoint, causing the malicious script to execute in their browser.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | mezzanine | < 6.1.1 | 6.1.1 |
References
- https://github.com/stephenmcd/mezzanine/discussions/2080
- https://github.com/stephenmcd/mezzanine/commit/898630d8df48cf3ddb8b9942f59168b93216e3f8
- https://advisory.checkmarx.net/advisory/CVE-2025-6050/
- https://github.com/advisories/GHSA-7pr5-w74r-jjj7
- https://nvd.nist.gov/vuln/detail/CVE-2025-6050
- https://advisory.checkmarx.net/advisory/CVE-2025-6050
- https://github.com/pypa/advisory-database/tree/main/vulns/mezzanine/PYSEC-2025-236.yaml
- https://github.com/stephenmcd/mezzanine
- https://https://github.com/stephenmcd/mezzanine/commit/898630d8df48cf3ddb8b9942f59168b93216e3f8
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N- Weakness (CWE)
CWE-79- Platform
- Python (PyPI)
- Package
mezzanine- Disclosed
- 17.06.2025
- Updated
- 11.10.2026 14:18
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2025-236 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-7pr5-w74r-jjj7 - CC BY 4.0
Vulnerability history: mezzanine
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 08.2021 07.2025
- Without a fix
- 5
- Exploited in attacks
- 0
Severity breakdown
- Medium 6
Disclosures per year
- 2021: 1
- 2022: 0
- 2023: 0
- 2024: 2
- 2025: 3
- 2026: 0
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Mezzanine CMS has a Stored Cross-Site Scripting (XSS) vulnerability in the displayable_links_js function this entry
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