CVE-2026-44601: High severity Tor Project Tor vulnerability
Published May 7, 2026
·Updated
Tor before 0.4.9.7, when circuit queue memory pressure exists, can experience a client crash because of a double close of a circuit, aka TROVE-2026-009.
Affected Software
2 affected components
Tor Project Tor<0.4.9.7
torproject Tor<0.4.9.7
Remediation
Event History
May 7, 2026
CVE Published
via MITRE·03:09 AM
Data Sourced
via MITRE·03:09 AM
DescriptionSeverityWeakness
Data Sourced
via NVD·04:16 AM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-44601?
CVE-2026-44601 has a severity rating of medium due to its potential to cause client crashes.
2
How do I fix CVE-2026-44601?
To fix CVE-2026-44601, update Tor to version 0.4.9.7 or later.
3
What causes the crash in CVE-2026-44601?
The crash in CVE-2026-44601 is caused by a double close of a circuit during circuit queue memory pressure.
4
Which versions of Tor are affected by CVE-2026-44601?
CVE-2026-44601 affects all versions of Tor prior to 0.4.9.7.
5
Is there a workaround for CVE-2026-44601?
There is no official workaround for CVE-2026-44601; updating to the patched version is recommended.