GHSA-9pw3-x84f-xcwf: Duplicate Advisory Langflow: Weak Fernet Key Vulnerability

HIGH
Share
CVSS 7.4
CWE-338
Published
Advisory Summary

GHSA-9pw3-x84f-xcwf is a HIGH (CVSS 7.4) langflow: weak fernet key vulnerability (CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves langflow: weak fernet key via random.seed(). Remediation is available in the latest vendor maintenance releases.

GHSA-9pw3-x84f-xcwf at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-9pw3-x84f-xcwf
Severity HIGH
CVSS v3.1 Base Score 7.4
CWE Classification CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.4

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability None (A:N)

How to Fix GHSA-9pw3-x84f-xcwf

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

langflow fixed: Latest secure release 
pip install langflow>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show langflow

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-9pw3-x84f-xcwf, inspect your installed packages using pip:

pip show langflow

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show langflow command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG), where the product uses a pseudo-random number generator (prng) in a security context, but the prng's algorithm is not cryptographically strong. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-jxw3-mjmx-3pqm. This link is maintained to preserve external references. ## Original Description IBM Langflow OSS contains a weak cryptographic key derivation vulnerability in the ensure_fernet_key() function.

GHSA-9pw3-x84f-xcwf Affected Duplicate Advisory Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
langflow
pypi/langflow
PyPI
≤ 1.10.0

References

NVD — GHSA-9pw3-x84f-xcwf NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9205
Duplicate Advisory Source Repository REPOSITORY
https://github.com/langflow-ai/langflow/pull/13704
Security Fix Commit FIX COMMIT
https://github.com/langflow-ai/langflow/commit/094694d3f20c1da499f4d8dbac15c510609e3026
www.ibm.com/support/pages/node/... WEB
https://www.ibm.com/support/pages/node/7282648

Frequently Asked Questions

What is GHSA-9pw3-x84f-xcwf?
GHSA-9pw3-x84f-xcwf is a security vulnerability in Duplicate Advisory involving Langflow: Weak Fernet Key via random.seed() under CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG).
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to current release patches across affected packages: langflow.
What version fixes GHSA-9pw3-x84f-xcwf?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is langflow affected?
Yes, langflow is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of GHSA-9pw3-x84f-xcwf?
GHSA-9pw3-x84f-xcwf has a CVSS v3.1 base score of 7.4 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with GHSA-9pw3-x84f-xcwf?
GHSA-9pw3-x84f-xcwf is classified under CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.).
How can I check PyPI dependencies for GHSA-9pw3-x84f-xcwf?
Run the dependency tree command: 'pip show langflow'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-9pw3-x84f-xcwf",
  "modified" : "2026-10-05T22:31:30Z",
  "published" : "2026-08-05T21:31:38Z",
  "withdrawn" : "2026-10-05T22:31:30Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Langflow: Weak Fernet Key via random.seed()",
  "details" : "## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-jxw3-mjmx-3pqm. This link is maintained to preserve external references.\n\n## Original Description\nIBM Langflow OSS contains a weak cryptographic key derivation vulnerability in the ensure_fernet_key() function.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "langflow"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.10.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-9205"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/langflow-ai/langflow/pull/13704"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/langflow-ai/langflow/commit/094694d3f20c1da499f4d8dbac15c510609e3026"
  }, {
    "type" : "WEB",
    "url" : "https://www.ibm.com/support/pages/node/7282648"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-338" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-05T22:31:30Z",
    "nvd_published_at" : "2026-08-05T19:17:49Z"
  }
}