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CVE-2025-30349

Quick assessment

Affected
Horde IMP
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IMP是Horde开源的一个基于 web 的网络邮件系统。 IMP 6.2.27及之前版本存在安全漏洞，该漏洞源于通过特制的HTML电子邮件可能导致账户接管。

CVSS 7.2 · High EPSS 31.29% · P98

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-30349

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Horde IMP through 6.2.27, as used with Horde Application Framework through 5.2.23, allows XSS that leads to account takeover via a crafted text/html e-mail message with an onerror attribute (that may use base64-encoded JavaScript code), as exploited in the wild in March 2025.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
IMP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
IMP是Horde开源的一个基于 web 的网络邮件系统。 IMP 6.2.27及之前版本存在安全漏洞，该漏洞源于通过特制的HTML电子邮件可能导致账户接管。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Horde IMP 0 ~ 6.2.27 -

II. Public POCs for CVE-2025-30349

# POC Description Source Link Shenlong Link
1 Horde IMP (through 6.2.27) vulnerability – obfuscation via HTML encoding – XSS payload https://github.com/natasaka/CVE-2025-30349 POC Details
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Qwen3.6-35B-A3B · 7719 chars
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III. Intelligence Information for CVE-2025-30349

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Mailing List Discussions for CVE-2025-30349 (2)

Vendor Pages for CVE-2025-30349 (5)

Other References for CVE-2025-30349 (3)

Other References for CVE-2025-30349 (2)

IV. Related Vulnerabilities

Same product: IMP
Same vendor: Horde
Same weakness: CWE-79

V. Comments for CVE-2025-30349

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