| Component | Langflow |
| Severity | high (CVSS 7.4) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H |
| Published (NVD) | 2026-08-05 |
| Last modified | 2026-08-06 |
| Affected versions | langflow >= 1.0.0, < 1.11.0 |
| Fixed in | 1.11.0 |
| Weakness | CWE-327 |
| CISA KEV | not listed |
NVD description
IBM Langflow OSS 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, 1.0.0 through 1.10.3, and 1.0.0 through 1.10.3 use Python's non-cryptographic random module for generating Fernet encryption keys from user secrets under 32 characters. The deterministic Mersenne Twister PRNG produces identical keys for identical seeds, allowing attackers to reproduce encryption keys and decrypt stored API keys and authentication tokens.
What to do
- Upgrade Langflow to
1.11.0or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
Read more
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