High severity · published Jul 30, 2026
CVE-2026-12942
Langflow is affected by path traversal due to multiple unauthenticated and insufficiently authorized API endpoints
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
IBM Langflow OSS 1.0.0 through 1.10.1 could allow a remote attacker to traverse directories on the system. An attacker could send a specially crafted URL request containing "dot dot " sequences ( /.. /) to view arbitrary files on the system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LO
Langflow OSS · IBM
1.0.0 through 1.10.1 · source: vendor
LA
Langflow · Langflow
1.0.0 before 1.10.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12942
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12942
Vendor Advisory
https://www.ibm.com/support/pages/node/7279993
More from Langflow OSS
9.8
CVE-2026-9198
Unauthenticated Remote Code Execution via Auto-Login Bypass and Code Validation
10.0
CVE-2026-10134
Unauthenticated Server-Side RCE via PythonCodeStructuredTool in Public Flows
10.0
CVE-2026-10561
Unauthenticated Remote Code Execution in Langflow OSS PythonREPLComponent via Builtins Injection
9.9
CVE-2026-19295
Langflow is affected by multiple remote code execution vulnerabilities due to insufficient code-execution policy enforcement
9.9
CVE-2026-12946
Remote Code Execution in CUGA Component CodeAgent