libp2p js-libp2p up to 15.0.22 stack-based overflow

Summaryinfo

A vulnerability was found in libp2p js-libp2p up to 15.0.22. It has been classified as critical. The affected element is an unknown function. The manipulation leads to stack-based overflow. This vulnerability is uniquely identified as CVE-2026-46679. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in libp2p js-libp2p up to 15.0.22. It has been rated as critical. This issue affects an unknown code block. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is availability. The summary by CVE is:

libp2p is a JavaScript Implementation of libp2p networking stack. Prior to version 15.0.23, three cooperating omissions in @libp2p/gossipsub allow an unauthenticated single peer to exhaust the Node.js heap of any gossipsub node with default options. This issue has been patched in version 15.0.23.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-46679 since 05/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 15.0.23 eliminates this vulnerability.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• libp2p

Name

• js-libp2p

Version

• 15.0.0
• 15.0.1
• 15.0.2
• 15.0.3
• 15.0.4
• 15.0.5
• 15.0.6
• 15.0.7
• 15.0.8
• 15.0.9
• 15.0.10
• 15.0.11
• 15.0.12
• 15.0.13
• 15.0.14
• 15.0.15
• 15.0.16
• 15.0.17
• 15.0.18
• 15.0.19
• 15.0.20
• 15.0.21
• 15.0.22

Website

• Product: https://github.com/libp2p/js-libp2p/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion