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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.

PUBLISHED Reserved 2026-01-19 | Published 2026-01-20 | Updated 2026-01-20 | Assigner VulDB




MEDIUM: 6.3CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 5.6CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 5.6CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
5.1AV:N/AC:H/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Improper Authentication

Timeline

2026-01-19:Advisory disclosed
2026-01-19:VulDB entry created
2026-01-19:VulDB entry last update

Credits

Ho Cherry (VulDB User) reporter

References

vuldb.com/?id.341789 (VDB-341789 | CRMEB JSON Token LoginServices.php remoteRegister improper authentication) vdb-entry technical-description

vuldb.com/?ctiid.341789 (VDB-341789 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.735349 (Submit #735349 | Zhongbang CRMEB v5.6.3 Authentication Bypass by) third-party-advisory

github.com/.../jwt_auth_bypass/remote_register_jwt_bypass.md exploit

cve.org (CVE-2026-1203)

nvd.nist.gov (CVE-2026-1203)

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