Login Request a demo
High severity · published Aug 28, 2026
CVE-2026-18904
Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities
8.2
CVSS
0.4%
EPSS
No
On KEV
Description
IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% 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 1.11.1 · source: vendor
LA
Langflow · Langflow
1.0.0 before 1.11.2 · source: NVD
Affected product
LO
Langflow OSS
IBM
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-18904
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-18904
Vendor Advisory
https://www.ibm.com/support/pages/node/7284579
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