CVE-2026-44599
Tor 0.4.9.7 Conflux BEGIN_DIR Attempt Vulnerability
Publication date: 2026-05-07
Last updated on: 2026-05-07
Assigner: MITRE
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| torproject | tor | to 0.4.9.7 (exc) |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
The Tor Project strongly recommends upgrading to Tor version 0.4.9.7 immediately to fix this vulnerability.
How can this vulnerability impact me? :
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.
Can you explain this vulnerability to me?
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
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.