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CVE-2025-23085

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-07 · updated 2026-06-17
• Weakness: CWE-401

Description

A memory leak could occur when a remote peer abruptly closes the socket without sending a GOAWAY notification. Additionally, if an invalid header was detected by nghttp2, causing the connection to be terminated by the peer, the same leak was triggered. This flaw could lead to increased memory consumption and potential denial of service under certain conditions. This vulnerability affects HTTP/2 Server users on Node.js v18.x, v20.x, v22.x and v23.x.

Affected products

• Node.js: 4.x from 4.0; 5.x from 5.0; 6.x from 6.0; 7.x from 7.0; 8.x from 8.0; 9.x from 9.0 — fixed in 18.20.6, 20.18.2, 22.13.1, 23.6.1

How to fix

Upgrade to a fixed version: Node.js 18.20.6, 20.18.2, 22.13.1, 23.6.1. Check the vendor advisory for mitigations.

References

• https://nodejs.org/en/blog/vulnerability/january-2025-security-releases
• https://lists.debian.org/debian-lts-announce/2025/02/msg00031.html
• https://security.netapp.com/advisory/ntap-20250321-0003/

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