Use After Free Affecting hexchat package, versions *

Q: How to fix?

There is no fixed version for hexchat .

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Snyk IDSNYK-RUST-HEXCHAT-15362914
published27 Feb 2026
disclosed17 Nov 2025
creditUnknown

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Introduced: 17 Nov 2025

CWE-416 (opens in a new tab)

How to fix?

There is no fixed version for hexchat.

Overview

Affected versions of this package are vulnerable to Use After Free via the deregister_command() function. An attacker can achieve arbitrary code execution or cause a crash by triggering use-after-free conditions. Additionally, macros intended to be safe may be unsafe to use in threaded contexts, potentially leading to further memory safety violations.

References

CVSS Base Scores

version 4.0

version 3.1

Attack Vector (AV)
Network
Attack Complexity (AC)
High
Attack Requirements (AT)
Present
Privileges Required (PR)
None
User Interaction (UI)
None

Confidentiality (VC)
High
Integrity (VI)
High
Availability (VA)
High

Confidentiality (SC)
None
Integrity (SI)
None
Availability (SA)
None