CVE-2026-34812— Endian Firewall /cgi-bin/proxypolicy.cgi mimetypes Stored Cross-Site Scripting
Quick assessment
Affected
Endian Endian Firewall
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Endian Firewall是Endian公司的一款网络安全防火墙系统。 Endian Firewall 3.3.25及之前版本存在跨站脚本漏洞，该漏洞源于对/cgi-bin/proxypolicy.cgi中的mimetypes参数处理不当，可能导致存储型跨站脚本攻击。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-34812
Vulnerability Information
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Vulnerability Title
Endian Firewall /cgi-bin/proxypolicy.cgi mimetypes Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the mimetypes parameter to /cgi-bin/proxypolicy.cgi. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/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
Endian Firewall 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Endian Firewall是Endian公司的一款网络安全防火墙系统。 Endian Firewall 3.3.25及之前版本存在跨站脚本漏洞，该漏洞源于对/cgi-bin/proxypolicy.cgi中的mimetypes参数处理不当，可能导致存储型跨站脚本攻击。
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 |
|---|---|---|---|---|
| Endian | Endian Firewall | 3.3.25 | - |
|
II. Public POCs for CVE-2026-34812
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-34812 (1)
Same Patch Batch · Endian · 2026-04-02 · 34 CVEs total
| CVE-2026-34795 | 8.8 HIGH | Endian Firewall /cgi-bin/logs_log.cgi DATE Perl Command Injection |
| CVE-2026-34791 | 8.8 HIGH | Endian Firewall /cgi-bin/logs_proxy.cgi DATE Perl Command Injection |
| CVE-2026-34796 | 8.8 HIGH | Endian Firewall /cgi-bin/logs_openvpn.cgi DATE Perl Command Injection |
| CVE-2026-34797 | 8.8 HIGH | Endian Firewall /cgi-bin/logs_smtp.cgi DATE Perl Command Injection |
| CVE-2026-34793 | 8.8 HIGH | Endian Firewall /cgi-bin/logs_firewall.cgi DATE Perl Command Injection |
| CVE-2026-34792 | 8.8 HIGH | Endian Firewall /cgi-bin/logs_clamav.cgi DATE Perl Command Injection |
| CVE-2026-34794 | 8.8 HIGH | Endian Firewall /cgi-bin/logs_ids.cgi DATE Perl Command Injection |
| CVE-2026-34790 | 7.1 HIGH | Endian Firewall /cgi-bin/backup.cgi remove ARCHIVE Directory Traversal |
| CVE-2026-34799 | 6.4 MEDIUM | Endian Firewall /manage/dnsmasq/hosts/ remark Stored Cross-Site Scripting |
| CVE-2026-34823 | 6.4 MEDIUM | Endian Firewall /manage/password/web/ remark Stored Cross-Site Scripting |
| CVE-2026-34822 | 6.4 MEDIUM | Endian Firewall /manage/ca/certificate/ new_cert_name Stored Cross-Site Scripting |
| CVE-2026-34813 | 6.4 MEDIUM | Endian Firewall /cgi-bin/proxyuser.cgi user Stored Cross-Site Scripting |
| CVE-2026-34810 | 6.4 MEDIUM | Endian Firewall /cgi-bin/vpnfw.cgi remark Stored Cross-Site Scripting |
| CVE-2026-34805 | 6.4 MEDIUM | Endian Firewall /cgi-bin/dnat.cgi remark Stored Cross-Site Scripting |
| CVE-2026-34811 | 6.4 MEDIUM | Endian Firewall /cgi-bin/xtaccess.cgi remark Stored Cross-Site Scripting |
| CVE-2026-34821 | 6.4 MEDIUM | Endian Firewall /manage/vpnauthentication/user/ remark Stored Cross-Site Scripting |
| CVE-2026-34798 | 6.4 MEDIUM | Endian Firewall /cgi-bin/routing.cgi remark Stored Cross-Site Scripting |
| CVE-2026-34816 | 6.4 MEDIUM | Endian Firewall /manage/smtpscan/domainrouting/ domain Stored Cross-Site Scripting |
| CVE-2026-34809 | 6.4 MEDIUM | Endian Firewall /cgi-bin/zonefw.cgi remark Stored Cross-Site Scripting |
| CVE-2026-34818 | 6.4 MEDIUM | Endian Firewall /manage/dnsmasq/localdomains/ remark Stored Cross-Site Scripting |
Showing top 20 of 34 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Endian Firewall
-
CVE-2026-34823
Endian Firewall /manage/password/web/ remark Stored Cross-Si -
CVE-2026-34822
Endian Firewall /manage/ca/certificate/ new_cert_name Stored -
CVE-2026-34821
Endian Firewall /manage/vpnauthentication/user/ remark Store -
CVE-2026-34820
Endian Firewall /manage/ipsec/ remark Stored Cross-Site Scri -
CVE-2026-34819
Endian Firewall /cgi-bin/openvpnclient.cgi REMARK Stored Cro
Same vendor: Endian
-
CVE-2026-34823
Endian Firewall /manage/password/web/ remark Stored Cross-Si -
CVE-2026-34822
Endian Firewall /manage/ca/certificate/ new_cert_name Stored -
CVE-2026-34821
Endian Firewall /manage/vpnauthentication/user/ remark Store -
CVE-2026-34820
Endian Firewall /manage/ipsec/ remark Stored Cross-Site Scri -
CVE-2026-34819
Endian Firewall /cgi-bin/openvpnclient.cgi REMARK Stored Cro
Same weakness: CWE-79
-
CVE-2026-8630
justhtml before 1.12.0 Mutation XSS via Raw Text Elements -
CVE-2026-8445
justhtml before 1.12.0 Sanitizer Bypass via Markdown -
CVE-2026-77088
justhtml 0.9.0 through 1.21.0 Cross-Site Scripting via code- -
CVE-2026-74793
justhtml before 3.11.0 XSS via selectedcontent projection -
CVE-2026-6827
justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnera
V. Comments for CVE-2026-34812
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