File Write and Read Vulnerability in IBM Langflow
CVE-2026-97677

8.1HIGH

Key Information:

Vendor

IBM
Status
Langflow Oss
Vendor
CVE Published:
8 November 2026

What is CVE-2026-97677?

In versions 1.0.0 through 1.12.2 of IBM Langflow, an authenticated flow author has the ability to manipulate files by writing attacker-controlled content into any directory that is writable by the service account. This exploitation circumvents the platform's safeguards that isolate local file access. Additionally, the creation of a specially crafted on-disk index allows the attacker to read the contents of files within the application's data directory, which may include sensitive configuration files, secrets, or database files.

Affected Version(s)

Langflow OSS 1.0.0 <= 1.12.2

References

https://www.ibm.com/support/pages/node/7290694
vendor-advisorypatch

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.