Medium severity · published Sep 4, 2026
CVE-2026-17621
Langflow OSS is affected by arbitrary file read due to path traversal vulnerabilities in file and knowledge base components
5.4
CVSS
0.4%
EPSS
No
On KEV
Description
IBM Langflow OSS 1.0.0 through 1.10.2 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:L/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% 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 1.10.2 · source: vendor
LA
Langflow · Langflow
1.0.0 before 1.10.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-17621
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-17621
Patch
https://www.ibm.com/support/pages/node/7286293
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