CVE-2026-1203 CRMEB JSON Token LoginServices.php remoteRegister improper authentication
Remote attackers can bypass authentication in CRMEB by manipulating the uid argument in the JSON Token Handler, potentially taking over accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1203?
CVE-2026-1203 is a medium-severity authentication bypass vulnerability in CRMEB, published on 20 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in CRMEB up to 5.6.3. The impacted element is the function remoteRegister of the file crmeb/app/services/user/LoginServices.php of the component JSON Token Handler. Executing a manipulation of the argument uid can lead to improper authentication. The attack may be performed from remote. The attack requires a high level of complexity. The exploitability is regarded as difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-287
Which versions are affected by CVE-2026-1203?
It affects 1 product.
Products include Crmeb Crmeb.
How do I fix CVE-2026-1203?
No fix has been published for CVE-2026-1203 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-1203 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1203 exists.
Other vulnerabilities in CRMEB
Sources
Also known as GHSA-rj2q-p862-w9r3.