CVE-2026-124014 Dixell/Copeland XWEB EVO Unauthenticated Configuration Write via config.lua
Unauthenticated remote attackers can write the XWEB EVO configuration file and cause denial of service; operators of this end-of-service product should care.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Harmful if only installed
- No
- Needs a specific call
- No
- Fix
- None listed
What is CVE-2026-124014?
CVE-2026-124014 is a high-severity missing authorization vulnerability in Copeland XWEB EVO, published on 12 Nov 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-306
Which versions are affected by CVE-2026-124014?
An affected version is exposed as installed. No special setting or call is needed.
How do I fix CVE-2026-124014?
No fix has been published for CVE-2026-124014 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-124014 being exploited?
There is no known exploitation of CVE-2026-124014 in the wild and no public exploit code.
Sources
Also known as GHSA-x5q2-4j2q-cpfm.