CVE-2025-61413: Piranha Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-3qcp-9v8c-6jp7
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CWE-79
Published
Advisory Summary

CVE-2025-61413 is a MODERATE cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Piranha libraries in the NuGet ecosystem. The issue involves piranha cms vulnerable to stored cross-site scripting (xss). Remediation is available in the latest vendor maintenance releases.

CVE-2025-61413 at a Glance

CVE Identifier CVE-2025-61413
GHSA Identifier GHSA-3qcp-9v8c-6jp7
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Piranha
Package Ecosystem NuGet
Published Date
Last Updated

How to Fix CVE-2025-61413

To remediate this vulnerability, upgrade all affected Piranha dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Piranha fixed: Latest secure release 
Upgrade Piranha to Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for Piranha

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-61413, inspect your project dependencies for Piranha:

inspect dependencies for Piranha

Analyze the terminal output to locate any version of Piranha in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Piranha, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2025-61413 Affected Piranha Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
Piranha
nuget/Piranha
NuGet
≤ 12.0.0

References

NVD — CVE-2025-61413 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-61413
Piranha Source Repository REPOSITORY
https://github.com/PiranhaCMS/piranha.core
Piranha Source Repository REPOSITORY
https://github.com/Saconyfx/security-advisories/blob/main/CVE-2025-61413/advisory.md
Piranha Security Information SECURITY
http://piranhacms.org

Frequently Asked Questions

What is CVE-2025-61413?
CVE-2025-61413 is a security vulnerability in Piranha involving Piranha CMS vulnerable to stored cross-site scripting (XSS) under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Piranha versions are affected?
Affected versions include releases prior to current release patches across affected packages: Piranha.
What version fixes CVE-2025-61413?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is Piranha affected?
Yes, Piranha is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What CWE is associated with CVE-2025-61413?
CVE-2025-61413 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check NuGet dependencies for CVE-2025-61413?
Run the dependency tree command: 'inspect dependencies for Piranha'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3qcp-9v8c-6jp7",
  "modified" : "2025-10-27T14:24:38Z",
  "published" : "2025-10-23T18:31:15Z",
  "aliases" : [ "CVE-2025-61413" ],
  "summary" : "Piranha CMS vulnerable to stored cross-site scripting (XSS)",
  "details" : "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.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Piranha"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "12.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-61413"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/PiranhaCMS/piranha.core"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Saconyfx/security-advisories/blob/main/CVE-2025-61413/advisory.md"
  }, {
    "type" : "WEB",
    "url" : "http://piranhacms.org"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-23T20:31:36Z",
    "nvd_published_at" : "2025-10-23T18:16:23Z"
  }
}