VDB-355967 · CVE-2026-3357 · CNNVD-202604-1894

IBM Langflow Desktop up to 1.8.2 deserialization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.35

Summaryinfo

A vulnerability has been found in IBM Langflow Desktop up to 1.8.2 and classified as critical. The impacted element is an unknown function of the component Langflow. The manipulation leads to deserialization. This vulnerability is uniquely identified as CVE-2026-3357. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in IBM Langflow Desktop up to 1.8.2. It has been rated as critical. This issue affects an unknown part of the component Langflow. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

IBM Langflow Desktop 1.6.0 through 1.8.2 Langflow could allow an authenticated user to execute arbitrary code on the system, caused by an insecure default setting which permits the deserialization of untrusted data in the FAISS component.

The weakness was disclosed by Weblover.. It is possible to read the advisory at ibm.com. The identification of this vulnerability is CVE-2026-3357 since 02/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/10/2026).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at CNNVD (CNNVD-202604-1894). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Langflow Desktop

Version

License

commercial

Website

Vendor: https://www.ibm.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (ibm): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/27/2026 CVE reserved
04/08/2026 +39 days Advisory disclosed
04/08/2026 +0 days VulDB entry created
04/10/2026 +2 days VulDB entry last update

Sourcesinfo

Vendor: ibm.com

Advisory: ibm.com
Researcher: Weblover.
Status: Confirmed

CVE: CVE-2026-3357 (🔒)
GCVE (CVE): GCVE-0-2026-3357
GCVE (VulDB): GCVE-100-355967
CNNVD: CNNVD-202604-1894 - IBM Langflow Desktop 代码问题漏洞

Entryinfo

Created: 04/08/2026 07:21
Updated: 04/10/2026 08:44
Changes: 04/08/2026 07:21 (64), 04/10/2026 08:44 (6)
Complete: 🔍
Cache ID: 216:622:103