Unbounded Memory Growth in libp2p Networking Stack by libp2p-rust
CVE-2026-35457

8.2HIGH

Key Information:

Vendor

Libp2p

Status
Rust-libp2p
Vendor
CVE Published:
7 April 2026

What is CVE-2026-35457?

The libp2p-rust implementation of the libp2p networking stack is vulnerable due to the rendezvous server storing pagination cookies without limits. This oversight allows unauthenticated peers to issue repeated DISCOVER requests, leading to uncontrolled memory usage. This issue has been resolved in version 0.17.1, which introduces mechanisms to prevent memory bloat and ensure stable performance.

Affected Version(s)

rust-libp2p < 0.17.1

References

https://github.com/libp2p/rust-libp2p/security/advisories...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.