CVE-2026-1203

CRMEB JSON Token LoginServices.php remoteRegister improper authentication

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.

Affected

CRMEB

CVSS v4.0 VULDB

2.9 LOWCVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 NVD

8.1 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 VULDB

5.6 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS v2.0 VULDB

5.1 MEDIUMAV:N/AC:H/Au:N/C:P/I:P/A:P

EPSS

0.81% chance of exploitation in the next 30 days, 56th percentile

Published

2026-01-20

Updated

2026-02-23

Proof-of-concept exploits (1)

• foeCat/CVE/blob/main/CRMEB/jwt_auth_bypass/remote_register_jwt_bypass.md0★ · 2026-01-16

Security advisories

• https://vuldb.com/?id.341789
• https://vuldb.com/?submit.735349

References

• CVE Record
• NVD entry

Related

• CVE-2026-0575
• CVE-2026-0576
• CVE-2026-0577
• CVE-2026-0578
• CVE-2026-0579
• CVE-2026-0583