CVE-2026-87724
Description
A flaw was found in Tor. A remote attacker could exploit this vulnerability by sending a specific congestion-control (CC) response extension without first sending a corresponding request. This misinterpretation of the CC_RESPONSE extension leads to a corrupted congestion-control state, which can cause the Tor service to crash, resulting in a Denial of Service (DoS).
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Understanding the Weakness (CWE)
Availability
Technical Impact: DoS: Crash, Exit, or Restart
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