Reading the vendor advisory
Black Shard's team can check your exposure to CVE-2026-124014 and take the fix off your plate.
XWEB EVO 4.3.0 through 5.8.8 contains an unauthenticated arbitrary file write vulnerability that allows remote attackers to modify the system configuration file /etc/xwebconfig.json by sending a crafted POST request to config.lua with action=set, which performs no session validation and writes the raw, unvalidated request body. Attackers can tamper with configuration values such as model and plugin fields or trigger a SYSTEM_NOT_CONFIGURED state via the unauthenticated action=get and action=set operations, resulting in configuration tampering and denial of service. This product line reached it's end of service date in March 2026.
Black Shard's team can check your exposure, take a fix off your plate or step in on a live incident.
Severity
8.8of 10, high
Updated 13 Nov 2026, 11:33 UTC, 30 of 36 sources answering.
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