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TI-2026-27065 Aliases CVE-2026-34821GHSA-qxfx-cg86-j76f

Endian Firewall /manage/vpnauthentication/user/ remark Stored Cross-Site Scripting

Priority LOW 22CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the remark parameter to /manage/vpnauthentication/user/. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00164 5th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
EndianEndian Firewall3.3.25—No fix listedCNA
  • Endian Firewall VendorEndian Affected 3.3.25 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:endian:firewall_community:*:*:*:*:*:*:*:*up to 3.3.25VulnerableEndian
  • cpe:2.3:a:endian:firewall_community:*:*:*:*:*:*:*:* Versions up to 3.3.25 Vulnerable ·Endian

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-34821
  2. 2026-10-03 Alias added: GHSA-qxfx-cg86-j76f

References

Other 1

  • TI-2026-27040 Endian Firewall /cgi-bin/logs_openvpn.cgi DATE Perl Command Injection CVSS 4.0HIGH 8.7
  • TI-2026-27039 Endian Firewall /cgi-bin/logs_log.cgi DATE Perl Command Injection CVSS 4.0HIGH 8.7
  • TI-2021-08747 Endian Firewall Community (aka EFW) 3.3.2 allows remote authenticated users to execute… CVSS 3.1HIGH 8.8
  • TI-2026-27041 Endian Firewall /cgi-bin/logs_smtp.cgi DATE Perl Command Injection CVSS 4.0HIGH 8.7
  • TI-2026-27038 Endian Firewall /cgi-bin/logs_ids.cgi DATE Perl Command Injection CVSS 4.0HIGH 8.7
  • TI-2026-27037 Endian Firewall /cgi-bin/logs_firewall.cgi DATE Perl Command Injection CVSS 4.0HIGH 8.7
See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences