CVE-2026-77587
Last modified
CVE-2026-77587 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux set whose last linked leg has already been closed. A malicious exit node could use this to crash a client. EPSS estimates a 0.40% chance of exploitation in the next 30 days.
Description
Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recovery leg revives a conflux set whose last linked leg has already been closed. A malicious exit node could use this to crash a client. This is TROVE-2026-026.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Torproject | Tor | < 0.4.9.11 |
References
- https://gitlab.torproject.org/tpo/core/tor/-/raw/tor-0.4.9.11/ChangeLogPermissions Required, Release Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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