Security Bulletin
Summary
Langflow OSS is affected by multiple vulnerabilities involving code-execution restrictions, access controls, sensitive-data handling, file access, and archive processing. Depending on deployment configuration, an attacker could execute code, read or modify data without authorization, disclose sensitive information, or cause denial of service.
Vulnerability Details
CVEID: CVE-2026-104334
DESCRIPTION: Langflow OSS could allow a remote attacker to execute arbitrary code due to improper control of code generation.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-97677
DESCRIPTION: An authenticated flow author could write attacker-controlled file content into any directory writable by the service account, bypassing the platform's local file access isolation safeguard. Via a crafted on-disk index, the attacker could also read the contents of arbitrary files accessible to the service process — including configuration files, secrets, or database files stored under the application's data directory.
CWE: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS Source: IBM
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2026-97676
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special elements used in code, resulting in a sandbox escape.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-101329
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to improper access control.
CWE: CWE-284: Improper Access Control
CVSS Source: IBM
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2026-97680
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information or inject malicious data due to improper access control in the vertex result caching subsystem.
CWE: CWE-284: Improper Access Control
CVSS Source: IBM
CVSS Base score: 8.3
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L)
CVEID: CVE-2026-97678
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper input validation.
CWE: CWE-693: Protection Mechanism Failure
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-97673
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper input validation.
CWE: CWE-693: Protection Mechanism Failure
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-97655
DESCRIPTION: Langflow OSS could allow a remote attacker to execute arbitrary code due to an incomplete blocklist in the code security scanner.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-97679
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special elements used in an OS command ('Code Injection') related to improper input validation.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-101331
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to insufficiently protected credentials.
CWE: CWE-522: Insufficiently Protected Credentials
CVSS Source: IBM
CVSS Base score: 7.7
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)
CVEID: CVE-2026-97674
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary OS commands due to improper neutralization of special elements used in an OS command ('Code Injection'), aka improper control of code generation.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2026-103360
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to improper limitation of a pathname to a restricted directory.
CWE: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS Source: IBM
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2026-88962
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper control of code generation.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-93674
DESCRIPTION: Langflow OSS could allow a remote attacker to execute arbitrary code due to improper neutralization of special elements used in an OS command.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 9.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-93679
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to cause a denial of service due to uncontrolled resource consumption during ZIP file extraction.
CWE: CWE-400: Uncontrolled Resource Consumption
CVSS Source: IBM
CVSS Base score: 4.3
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L)
CVEID: CVE-2026-93443
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper neutralization of special elements used in code.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-93678
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to improper authorization.
CWE: CWE-639: Authorization Bypass Through User-Controlled Key
CVSS Source: IBM
CVSS Base score: 7.6
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L)
CVEID: CVE-2026-93677
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to exposure of sensitive information to an unauthorized actor.
CWE: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CVSS Source: IBM
CVSS Base score: 7.7
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N)
CVEID: CVE-2026-93445
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper control of generation of code.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 8.1
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
CVEID: CVE-2026-93447
DESCRIPTION: Langflow OSS could allow an attacker with access to the server secret and Redis write access to submit a malicious serialized cache value. When the value was retrieved, deserialization could have executed attacker-controlled code with the privileges of the service process.
CWE: CWE-502: Deserialization of Untrusted Data
CVSS Source: IBM
CVSS Base score: 7.5
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-93449
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper control of code generation.
CWE: CWE-94: Improper Control of Generation of Code ('Code Injection')
CVSS Source: IBM
CVSS Base score: 8.5
CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H)
CVEID: CVE-2026-93675
DESCRIPTION: Langflow OSS could allow a remote attacker to execute arbitrary code due to an expected dependency confusion.
CWE: CWE-440: Expected Behavior Violation
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVEID: CVE-2026-93448
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to improper limitation of a pathname to a restricted directory.
CWE: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS Source: IBM
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2026-97671
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to obtain sensitive information due to a path traversal vulnerability.
CWE: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVSS Source: IBM
CVSS Base score: 6.5
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2026-104335
DESCRIPTION: Langflow OSS could allow a remote authenticated attacker to execute arbitrary code due to improper access control.
CWE: CWE-284: Improper Access Control
CVSS Source: IBM
CVSS Base score: 8.8
CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| Langflow OSS | 1.0.0-1.12.2 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by upgrading Langflow OSS to version 1.12.3.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
02 Oct 2026: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
02 October 2026
Initial Publish date:
02 October 2026
UID
ibm17290694