polyfliof92 is a malicious package. This package contains malicious code, and its content was removed from the official package manager. While this package might be attempting to impersonate a valid organization, there is no connection between that organization and this package authorship.

heisenbridge is an a bouncer-style Matrix IRC bridge

Affected versions of this package are vulnerable to Improper Neutralization of Line Delimiters due to insufficient sanitization, specifically, failure to strip carriage return characters, attackers can exploit it by injecting malicious commands via specially crafted messages. Affected versions are vulnerable to command injection in relay mode.

Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the SQLManager class, exploitable when the user defines JDBC connections as a key-value pair. An attacker can execute arbitrary code and access unauthorized system files by injecting malicious parameters that bypass regular expression filters by adding whitespace between parameters.

Note: This is a trivial bypass for the vulnerability described at CVE-2024-10553.