Tor Project to disable support for Tor 0.4.8 on September 1

📅 24 June 2026 at 18:08 UTC📰 Cyber InsiderView original source ↗

The Tor Project has announced plans to stop supporting Tor 0.4.8 and earlier releases on September 1, 2026, as it prepares the network for the deployment of Arti, its Rust-based implementation of Tor. The announcement concerns the underlying Tor software used by relays, onion services, and applications that integrate with Tor, not the Tor Browser … The post Tor Project to disable support for Tor 0.4.8 on September 1 appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis

🔍Threat Overview

The Tor Project will stop supporting Tor 0.4.8 and earlier releases on September 1, 2026, due to the planned removal of obsolete fields from Tor's directory protocol, which will make those versions incompatible with the network.

⚙️Technical Details

💥Impact Assessment

Severity: critical

Who Is at Risk

Administrators running Tor relays, onion services, or applications that embed Tor

🛡️Recommended Actions

1Verify which Tor software version is being used and upgrade to the Tor 0.4.9 series or later before September 1, 2026.

2Contact downstream projects known to ship older Tor versions and encourage community members to help identify software that still relies on unsupported releases.

3Track outreach efforts to maintainers of affected projects and packages.

📦Affected Products

Tor relaysonion servicesapplications that embed Tor

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