CVE-2026-9201: CWE-326 Inadequate Encryption Strength in IBM Langflow OSS
IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute arbitrary code due to a cryptographic weakness in the custom component validation mechanism. When the optional hardening mode that restricts execution to trusted component templates is enabled, the application validates component code using a truncated SHA‑256 hash. Because the hash comparison relies on only a portion of the digest, an attacker can craft malicious component code that collides with a trusted template hash and bypasses validation. Successful exploitation allows the attacker to introduce and execute unauthorized Python code within the Langflow process, defeating the intended security control and potentially leading to full compromise of the affected instance.
AI Analysis
Technical Summary
CVE-2026-9201 describes a vulnerability in IBM Langflow OSS (versions 1.0.0 through 1.10.3) where the optional hardening mode validates component code using only a truncated portion of the SHA-256 hash digest. This inadequate encryption strength (CWE-326) allows an authenticated attacker to create malicious component code that collides with a trusted template hash, bypassing validation. Exploitation enables arbitrary Python code execution within the Langflow process, defeating security controls and potentially leading to full system compromise.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary Python code within the Langflow process, bypassing intended security controls. This can lead to full compromise of the affected instance, including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been provided at this time.
CVE-2026-9201: CWE-326 Inadequate Encryption Strength in IBM Langflow OSS
Description
IBM Langflow OSS 1.0.0 through 1.10.3 could allow an authenticated attacker to execute arbitrary code due to a cryptographic weakness in the custom component validation mechanism. When the optional hardening mode that restricts execution to trusted component templates is enabled, the application validates component code using a truncated SHA‑256 hash. Because the hash comparison relies on only a portion of the digest, an attacker can craft malicious component code that collides with a trusted template hash and bypasses validation. Successful exploitation allows the attacker to introduce and execute unauthorized Python code within the Langflow process, defeating the intended security control and potentially leading to full compromise of the affected instance.
CVSS v3.1
Score 8.8high
Affected software
IBM
Langflow OSS
cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*cpe:2.3:a:ibm:langflow_oss:1.10.3:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-9201 describes a vulnerability in IBM Langflow OSS (versions 1.0.0 through 1.10.3) where the optional hardening mode validates component code using only a truncated portion of the SHA-256 hash digest. This inadequate encryption strength (CWE-326) allows an authenticated attacker to create malicious component code that collides with a trusted template hash, bypassing validation. Exploitation enables arbitrary Python code execution within the Langflow process, defeating security controls and potentially leading to full system compromise.
Potential Impact
Successful exploitation allows an authenticated attacker to execute arbitrary Python code within the Langflow process, bypassing intended security controls. This can lead to full compromise of the affected instance, including confidentiality, integrity, and availability impacts as indicated by the CVSS vector (C:H/I:H/A:H).
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or temporary workaround has been provided at this time.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ibm
- Date Reserved
- 2026-05-21T15:47:59.523Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a738b03bf8831d53956b2b1
Added to database: 08/05/2026, 19:12:03 UTC
Last enriched: 08/05/2026, 19:26:07 UTC
Last updated: 09/19/2026, 10:01:34 UTC
Views: 75
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