PYSEC-2026-4235 Langflow: Weak Fernet Key via random.seed()

Summary Langflow uses Python's random module Mersenne Twister, a non-cryptographic PRNG seeded with the SECRETKEY to derive the Fernet encryption key for all stored user credentials API keys, LLM provider secrets, database passwords. When the SECRETKEY is shorter than 32 characters — a common...

PT-2026-68293

Name of the Vulnerable Software and Affected Versions IBM Langflow OSS versions 1.0.0 through 1.10.3 Description The software uses Python's non-cryptographic random module to generate Fernet encryption keys when user secrets are shorter than 32 characters. This process relies on the Mersenne...

CVE-2026-8470: Use of a Broken or Risky Cryptographic Algorithm

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...

PY#RATION: New Python-based RAT Uses WebSocket for C2 and Data Exfiltration

Cybersecurity researchers have unearthed a new attack campaign that leverages a Python-based remote access trojan RAT to gain control over compromised systems since at least August 2022. "This malware is unique in its utilization of WebSockets to avoid detection and for both command-and-control C...

[SECURITY] Fedora 36 Update: golang-github-fernet-0-0.9.20200726giteff2850.fc36

Fernet takes a user-provided message an arbitrary sequence of bytes, a key 256 bits, and the current time, and produces a token, which contains the message in a form that can't be read or altered without the key...

ALPINE-CVE-2020-36242

In the cryptography package before 3.3.2 for Python, certain sequences of update calls to symmetrically encrypt multi-GB values could result in an integer overflow and buffer overflow, as demonstrated by the Fernet class...