CVE-2026-77587: CWE-911 Improper Update of Reference Count in torproject Tor
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.
CVE-2026-77587: CWE-911 Improper Update of Reference Count in torproject Tor
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.
CVSS v3.1
Score 5.9medium
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-08-20T20:47:39.624Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a876922acd9273b491d067b
Added to database: 08/20/2026, 20:52:50 UTC
Last updated: 08/20/2026, 20:52:50 UTC
Views: 1
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