FreeBSD : mod_wsgi -- race condition at process start can leak request context between requests (83f5b20f-4429-4ee1-a764-66a231ed9dab)

high Nessus Plugin ID 366758

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 83f5b20f-4429-4ee1-a764-66a231ed9dab advisory.

Graham Dumpleton reports:
A race condition at process startup could let two threads be handed the same per-thread record, because records were allocated from an Apache memory pool shared by every thread without a lock.
Threads sharing a record also shared the mod_wsgi.thread_id value and, for named application groups, the same Python thread state, so one request's context (such as session data) could leak into another concurrent request. On Python 3.14 and later the shared thread state could instead crash the worker process.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 366758

File Name: freebsd_pkg_83f5b20f44294ee1a76466a231ed9dab.nasl

Version: 1.1

Type: Local

Family: FreeBSD Local Security Checks

Published: 10/17/2026

Updated: 10/17/2026

Supported Sensors: Nessus

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:ap24-py312-mod_wsgi

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 10/16/2026

Vulnerability Publication Date: 10/13/2026

Detections

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