Piranha CMS Cross-site Scripting vulnerability
A stored cross-site scripting (XSS) vulnerability in Piranha CMS 11.1 allows remote attackers to execute arbitrary JavaScript in the web browser of a user, by creating a page via the /manager/pages and then adding a markdown content with the XSS payload.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | Piranha | <= 11.1.0 | no fix |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N- Weakness (CWE)
CWE-79- Platform
- .NET (NuGet)
- Package
Piranha- Disclosed
- 20.12.2024
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-mmx8-vrfg-hfmq - CC BY 4.0
Vulnerability history: Piranha
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 10.2021 12.2025
- Without a fix
- 6
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 5
- Low 2
Disclosures per year
- 2021: 2
- 2022: 0
- 2023: 0
- 2024: 2
- 2025: 4
- 2026: 0
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Piranha CMS Cross-site Scripting vulnerability this entry
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