Arbitrary File Overwrite Vulnerability in IBM Langflow OSS
CVE-2026-77819

6.5MEDIUM

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
29 October 2026

What is CVE-2026-77819?

IBM Langflow OSS versions 1.0.0 through 1.12.3 are susceptible to a vulnerability that may allow a remote authenticated attacker to overwrite arbitrary files. This issue arises from inadequate path restrictions, enabling unauthorized manipulation of files beyond intended boundaries. Users are encouraged to apply the recommended patches to mitigate this risk.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.12.3

References

https://www.ibm.com/support/pages/node/7293015
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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