# libp2p-gossipsub (crates.io) vulnerabilities

2 known vulnerabilities (2 high), with the versions each affects and the releases that fix them.

## At a glance

- Latest release: 0.50.1 (Oct 19, 2026): no advisory affects it
- Newest unaffected release: 0.50.1 (Oct 19, 2026), the latest release
- Weekly downloads: 103.4K
- Dependents: 0
- Releases: 55 since 0.15.0 (Jan 24, 2020)
- Registry: https://crates.io/crates/libp2p-gossipsub
- Releases read: Nov 8, 2026

## Version timeline

Affected versions per advisory, in version order:

- CVE-2026-34219: 0.15.0 to 0.49.3 (0.49.4 is outside it)
- CVE-2026-33040: 0.15.0 to 0.49.2 (0.49.3 is outside it)

## Advisories (2)

### [CVE-2026-34219](https://cve.now/CVE-2026-34219): libp2p-gossipsub: Gossipsub PRUNE Backoff Heartbeat Instant Overflow

- Severity: High 8.2
- Published: Mar 31, 2026
- Affected: fixed in 0.49.4.
- Fixed in 0.49.4 (released Mar 26, 2026, 5 days before disclosure).
- The latest release, 0.50.1, is not affected.
- 47% of libp2p-gossipsub downloads in the last 90 days were affected versions (639.5K).

### [CVE-2026-33040](https://cve.now/CVE-2026-33040): libp2p-rust: Gossipsub PRUNE.backoff Duration Overflow

- Severity: High 8.7
- Published: Mar 20, 2026
- Affected: fixed in 0.49.3.
- Fixed in 0.49.3 (released Mar 9, 2026, 11 days before disclosure).
- The latest release, 0.50.1, is not affected.
- 46% of libp2p-gossipsub downloads in the last 90 days were affected versions (628.1K).

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