CVE-2026-114473— hMailServer 身份验证绕过漏洞
一分钟漏洞结论
影响对象
Progressive Robot Ltd hMailServer
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Progressive Robot hMailServer 6.2.1 至 6.3.6 版本中，发件人重写方案（Sender Rewriting Scheme，SRS）存在授权缺陷，允许远程攻击者通过该服务器向外部地址中继邮件。当启用 SRS 时，服务器会将其转发的邮件的信封发件人重写为转发域名下的已签名 SRS 地址，并将退回邮件发送至该地址以返回给原始发件人。然而，该实现将任何发往有效 SRS 地址的邮件（无论其发件人是谁）均视为投递给本地收件人，因此未应用中继控制规则及所需的 SMTP 身份验证，导致邮件被直
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一、 漏洞 CVE-2026-114473 基础信息
漏洞信息
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Vulnerability Title
Incorrect Authorization in hMailServer
来源: CVE Program / CVE List V5
Vulnerability Description
Incorrect authorization in the Sender Rewriting Scheme (SRS) of Progressive Robot hMailServer 6.2.1 through 6.3.6 allows a remote attacker to relay mail through the server to outside addresses. With SRS enabled, the server rewrites the envelope sender of mail it forwards to a signed SRS address at the forwarding domain, and passes a bounce to that address back to the original sender; but it took every message to a valid SRS address, whatever its sender, as delivery to a local recipient, so the relay rules and the SMTP authentication they require were not applied, and the message was delivered to the outside address the SRS address encodes. Anyone holding a valid SRS address of the server, such as the recipient of a forwarded message, could have the server relay mail to the address it encodes for 21 days, and an account holder whose account forwards to an outside mailbox could obtain one for any address. SRS is off by default.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
来源: CVE Program / CVE List V5
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| Progressive Robot Ltd | hMailServer | 6.2.1 ~ 6.3.6 | - |
|
二、漏洞 CVE-2026-114473 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-114473 厂商页面 (1)
CVE-2026-114473 其他参考 (1)
同批安全公告 · Progressive Robot Ltd · 2026-10-21 · 共 12 条
| CVE-2026-114489 | 8.1 HIGH | hMailServer 授权缺失漏洞 |
| CVE-2026-114490 | 7.8 HIGH | hMailServer 身份验证错误漏洞 |
| CVE-2026-114476 | 7.5 HIGH | hMailServer 身份验证错误漏洞 |
| CVE-2026-114475 | 6.5 MEDIUM | hMailServer 授权缺失漏洞 |
| CVE-2026-114478 | 5.9 MEDIUM | hMailServer 混淆代理漏洞 |
| CVE-2026-114474 | 5.9 MEDIUM | hMailServer 使用不可信来源漏洞 |
| CVE-2026-114479 | 5.8 MEDIUM | hMailServer 非安全失败（开放）漏洞 |
| CVE-2026-114470 | 5.3 MEDIUM | hMailServer 跨站请求伪造漏洞 |
| CVE-2026-114471 | 4.7 MEDIUM | hMailServer 敏感信息写入日志文件漏洞 |
| CVE-2026-114477 | 4.3 MEDIUM | hMailServer 未授权访问漏洞 |
| CVE-2026-114472 | 3.7 LOW | hMailServer 资源池不足漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2026-114473
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