CVE-2026-33246
NATS: Leafnode connections allow spoofing of Nats-Request-Info identity headers
描述
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. The nats-server offers a `Nats-Request-Info:` message header, providing information about a request. This is supposed to provide enough information to allow for account/user identification, such that NATS clients could make their own decisions on how to trust a message, provided that they trust the nats-server as a broker. A leafnode connecting to a nats-server is not fully trusted unless the system account is bridged too. Thus identity claims should not have propagated unchecked. Prior to versions 2.11.15 and 2.12.6, NATS clients relying upon the Nats-Request-Info: header could be spoofed. This does not directly affect the nats-server itself, but the CVSS Confidentiality and Integrity scores are based upon what a hypothetical client might choose to do with this NATS header. Versions 2.11.15 and 2.12.6 contain a fix. No known workarounds are available.
如何修補 CVE-2026-33246
要修補 CVE-2026-33246,請將受影響套件升級到下列已修補版本。
- —升級至 2.11.15 或更新版本
- —未列出修補版本
- —未列出修補版本
- —未列出修補版本
- —升級至 2.11.15 或更新版本
- —升級至 2.11.15 或更新版本
CVE-2026-33246 正在被利用嗎?
低 — EPSS 為 0.1%,目前沒有觀察到大規模利用活動。
受影響套件(6)
- from 0, < 2.11.15, >= 2.12.0, < 2.12.6
- from 0
- from 0
- from 0
- from 0, < 2.11.15
- from 0, < 2.11.15, >= 2.12.0-RC.1, < 2.12.6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |