What’s Vulnerable › Vulnerabilities
CVE-2020-12821
- Severity: critical (CVSS 9.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.9% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2020-07-07 · updated 2026-06-17
Description
Gossipsub 1.0 does not properly resist invalid message spam, such as an eclipse attack or a sybil attack.
Affected products
- Protocol Gossipsub: 1.0
References
- https://bitcoin.stackexchange.com/questions/61151/eclipse-attack-vs-sybil-attack
- https://gateway.ipfs.io/ipfs/QmPWuNBs8h6a8KamRvGqhTq5UDYJRQsEEy37zDKjujQQQm/Gossipsub%20Evaluation%20Report.pdf
- https://github.com/ipfs/blog/pull/450
- https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md
- https://github.com/libp2p/specs/tree/master/pubsub/gossipsub
- https://bitcoin.stackexchange.com/questions/61151/eclipse-attack-vs-sybil-attack
- https://gateway.ipfs.io/ipfs/QmPWuNBs8h6a8KamRvGqhTq5UDYJRQsEEy37zDKjujQQQm/Gossipsub%20Evaluation%20Report.pdf
- https://github.com/ipfs/blog/pull/450
- https://github.com/libp2p/specs/blob/master/pubsub/gossipsub/gossipsub-v1.1.md
- https://github.com/libp2p/specs/tree/master/pubsub/gossipsub
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