Piranha CMS vulnerable to stored cross-site scripting (XSS)
A stored cross-site scripting (XSS) vulnerability in the /manager/pages component of Piranha CMS v12.0 allows attackers to execute arbitrary web scripts or HTML via creating a page and injecting a crafted payload into the Markdown blocks.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | Piranha | <= 12.0.0 | no fix |
References
- CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N- Weakness (CWE)
CWE-79- Platform
- .NET (NuGet)
- Package
Piranha- Disclosed
- 23.10.2025
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-3qcp-9v8c-6jp7 - 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 vulnerable to stored cross-site scripting (XSS) this entry
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