CVE-2026-29136— CA Notification HTML Injection
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I. Basic Information for CVE-2026-29136
Vulnerability Information
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Vulnerability Title
CA Notification HTML Injection
Source: NVD (National Vulnerability Database)
Vulnerability Description
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to inject HTML into notification emails about new CA certificates.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
Vulnerability Title
SEPPmail Secure Email Gateway 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SEPPmail Secure Email Gateway是德国SEPPmail公司的一个电子邮件安全网关。 SEPPmail Secure Email Gateway 15.0.3之前版本存在安全漏洞，该漏洞源于允许攻击者向新CA证书通知邮件中注入HTML。
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 |
|---|---|---|---|---|
| SEPPmail | Secure Email Gateway | 0 ~ 15.0.3 | - |
II. Public POCs for CVE-2026-29136
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · SEPPmail · 2026-04-02 · 14 CVEs total
| CVE-2026-29140 | S/MIME Signature Additional Certificate | |
| CVE-2026-29135 | Webmail Password Tag Sanitization Bypass | |
| CVE-2026-29132 | ESWmail-Verify Bypass | |
| CVE-2026-29133 | UID Regex Bypass | |
| CVE-2026-29134 | GINA Domain Switch | |
| CVE-2026-29144 | Unicode Subject Tags | |
| CVE-2026-29141 | Bounded Subject Tag Sanitization | |
| CVE-2026-29143 | S/MIME Decryption Impersonation | |
| CVE-2026-29137 | Long Subject Untagging | |
| CVE-2026-29142 | Plaintext secure-mail.html | |
| CVE-2026-29138 | PGP Decryption Sender LDAP Injection | |
| CVE-2026-29139 | GINA State Confusion Account Takeover | |
| CVE-2026-29131 | PGP Decryption Recipient LDAP Injection |
IV. Related Vulnerabilities
Same weakness: CWE-79
- CVE-2026-42455
LinkWarden: Stored XSS via Client-Side Archive Upload (Unsan - CVE-2026-42451
Grimmory: Stored XSS via Malicious EPUB Enables Session Toke - CVE-2026-42556
Postiz stored XSS in public preview page - CVE-2026-42224
ipl/web is vulnerable to reflected XSS by malformed search r - CVE-2026-42192
Plunk: Stored XSS in campaign view
V. Comments for CVE-2026-29136
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