VulnerabilityAnalyzed

CVE-2026-34814

Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the group parameter to /cgi-bin/proxygroup.cgi.

MEDIUM 5.1EPSS 0.14%

Does this matter?

Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own.

Description

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

CVSS 4.0: 5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.14% probability · 4th percentile
CISA KEV: Not listed
Weakness: CWE-79
Affected: endian/firewall community
Source: disclosure@vulncheck.com

References

https://help.endian.com/hc/en-us/sections/360004371358-CommunityRelease Notes
https://www.vulncheck.com/advisories/endian-firewall-cgi-bin-proxygroup-cgi-group-stored-cross-site-scriptingThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.