AIKIDO-2026-308218
nostr-relay-pool is vulnerable to Uncontrolled Resource Consumption
75
High Risk
This Affects:
nostr-relay-poolTL;DR
The relay pool forwards every NIP-42 authentication challenge received from a relay through an unbounded command queue, while challenge handling can wait for an asynchronous signer or user interaction. Because challenges arrive faster than they can be answered, a malicious relay can continuously send new challenges without authenticating. Queued challenges and pending signer operations grow without limit until the client becomes unavailable. The fix coalesces pending challenges through a latest-value channel so only the single still-answerable challenge is retained and memory use stays bounded.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and your application connects to untrusted relays that can send NIP-42 authentication challenges.
Background info
nostr-relay-pool is vulnerable to Uncontrolled Resource Consumption in versions 0.0.1 - 0.44.2.
How to fix this
Upgrade the nostr-relay-pool library to the patch version.
Are You Affected?
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