IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox implementation. (CVE-2026-13435)
IBM Langflow OSS versions 1.0.0 through 1.10.1 contain an improper input validation vulnerability in the PythonREPL sandbox implementation. This vulnerability is classified under CWE-94, indicating issues with code injection or unsafe evaluation of input. The vulnerability has a critical severity rating based on the CVSS 3.1 vector provided, which indicates network attack vector, low attack complexity, privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability.
AI Analysis
Technical Summary
The vulnerability in IBM Langflow OSS affects versions 1.0.0 through 1.10.1 and involves improper input validation in the PythonREPL sandbox implementation. This flaw corresponds to CWE-94, which typically involves unsafe code evaluation or injection risks. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) indicates that an attacker with low complexity and some privileges can exploit this remotely without user interaction, resulting in complete compromise of confidentiality, integrity, and availability of the affected system. No patch or remediation information is currently provided, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with some privileges to execute arbitrary code remotely within the PythonREPL sandbox, leading to full compromise of the system's confidentiality, integrity, and availability. This could result in unauthorized data access, data modification, or denial of service conditions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch links are provided, users should monitor IBM's advisories for updates. Until a patch is available, restricting access to the affected PythonREPL sandbox and limiting privileges may reduce exposure.
IBM Langflow OSS 1.0.0 through 1.10.1 contains an improper input validation vulnerability in the PythonREPL sandbox implementation. (CVE-2026-13435)
Description
IBM Langflow OSS versions 1.0.0 through 1.10.1 contain an improper input validation vulnerability in the PythonREPL sandbox implementation. This vulnerability is classified under CWE-94, indicating issues with code injection or unsafe evaluation of input. The vulnerability has a critical severity rating based on the CVSS 3.1 vector provided, which indicates network attack vector, low attack complexity, privileges required, no user interaction, and complete impact on confidentiality, integrity, and availability.
CVSS v3.1
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in IBM Langflow OSS affects versions 1.0.0 through 1.10.1 and involves improper input validation in the PythonREPL sandbox implementation. This flaw corresponds to CWE-94, which typically involves unsafe code evaluation or injection risks. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H) indicates that an attacker with low complexity and some privileges can exploit this remotely without user interaction, resulting in complete compromise of confidentiality, integrity, and availability of the affected system. No patch or remediation information is currently provided, and no known exploits in the wild have been reported.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with some privileges to execute arbitrary code remotely within the PythonREPL sandbox, leading to full compromise of the system's confidentiality, integrity, and availability. This could result in unauthorized data access, data modification, or denial of service conditions.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch links are provided, users should monitor IBM's advisories for updates. Until a patch is available, restricting access to the affected PythonREPL sandbox and limiting privileges may reduce exposure.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-h7x8-fr4c-w46c
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-13435"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
Threat ID: 6a6bdd8b9c2644c7f8da72eb
Added to database: 07/30/2026, 23:26:03 UTC
Last enriched: 07/30/2026, 23:33:47 UTC
Last updated: 07/31/2026, 02:51:54 UTC
Views: 9
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