Flowise POST Request cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Flowise and classified as problematic. Affected by this vulnerability is an unknown functionality of the component POST Request Handler. The manipulation results in cross site scripting. This vulnerability is known as CVE-2025-55346. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Flowise (the affected version is unknown). It has been classified as problematic. Affected is an unknown code of the component POST Request Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. 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. This is going to have an impact on integrity. CVE summarizes:

User-controlled input flows to an unsafe implementation of a dynamic Function constructor, allowing network attackers to run arbitrary unsandboxed JS code in the context of the host, by sending a simple POST request.

The advisory is shared for download at research.jfrog.com. This vulnerability is traded as CVE-2025-55346 since 08/13/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2025-1836). Once again VulDB remains the best source for vulnerability data.

Affected

  • Open Source Flowise

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (JFROG): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/13/2025 CVE reserved
08/14/2025 +1 days Advisory disclosed
08/14/2025 +0 days VulDB entry created
08/15/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: jfsa-2025-001379925
Status: Confirmed

CVE: CVE-2025-55346 (🔒)
GCVE (CVE): GCVE-0-2025-55346
GCVE (VulDB): GCVE-100-320100
CERT Bund: WID-SEC-2025-1836 - Flowise: Mehrere Schwachstellen ermöglichen Codeausführung

Entryinfo

Created: 08/14/2025 12:10
Updated: 08/15/2025 05:25
Changes: 08/14/2025 12:10 (61), 08/15/2025 05:25 (6)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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