CVE-2026-44599
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Tor 0.4.9.7 Conflux BEGIN_DIR Attempt Vulnerability

Publication date: 2026-05-07

Last updated on: 2026-05-07

Assigner: MITRE

Description
Tor before 0.4.9.7 can attempt or accept BEGIN_DIR via conflux legs, aka TROVE-2026-008.
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Meta Information
Published
2026-05-07
Last Modified
2026-05-07
Generated
2026-06-16
AI Q&A
2026-05-07
EPSS Evaluated
2026-06-15
NVD
CVE-2026-44599
EUVD
EUVD-2026-28238
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
torproject tor to 0.4.9.7 (exc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-669 The product does not properly transfer a resource/behavior to another sphere, or improperly imports a resource/behavior from another sphere, in a manner that provides unintended control over that resource.
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Mitigation Strategies

The Tor Project strongly recommends upgrading to Tor version 0.4.9.7 immediately to fix this vulnerability.

Impact Analysis

The vulnerability can cause crashes, memory corruption, or potential security bypasses in the Tor software.

Such impacts could degrade the reliability and security of the Tor network, potentially exposing users to risks such as denial of service or bypassing intended security controls.

Executive Summary

CVE-2026-44599 affects Tor versions before 0.4.9.7 and involves the software attempting or accepting BEGIN_DIR commands via conflux legs, which is a specific part of the Tor network's relay mechanism.

This vulnerability is related to improper handling of BEGIN_DIR commands in conflux legs, which could lead to unexpected behavior in the Tor relay system.

Compliance Impact

There is no information available in the provided context or resources regarding how CVE-2026-44599 affects compliance with common standards and regulations such as GDPR or HIPAA.

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