CVE-2026-39832 — When adding a key to a remote agent constraint extensions...
CVE-2026-39832 漏洞深度分析
漏洞概述
CVE 编号： CVE-2026-39832
CVSS 评分： 9.1（CRITICAL）
CVSS 向量： CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE 分类： CWE-502,CWE-281
漏洞状态： Modified
发布时间： 2026-05-22T04:16:22.663
最后更新： 2026-07-14T12:17:03.117
漏洞描述
When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.
影响分析
此漏洞的具体影响取决于实际利用场景。"
修复建议
- 及时关注厂商发布的安全更新和补丁
- 升级受影响组件到最新版本
- 如无法立即升级，参考厂商提供的临时缓解措施
- 加强网络访问控制和监控
参考链接
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