CVE-2026-1203
CRMEB JSON Token LoginServices.php remoteRegister improper authentication
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.
INFO
Published Date :
Jan. 20, 2026, 1:15 a.m.
Last Modified :
Jan. 29, 2026, 9:14 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Update CRMEB to a version later than 5.6.3.
- Apply vendor patches if available.
- Review authentication logic for vulnerabilities.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-1203.
| URL | Resource |
|---|---|
| https://github.com/foeCat/CVE/blob/main/CRMEB/jwt_auth_bypass/remote_register_jwt_bypass.md | Exploit Mitigation Third Party Advisory |
| https://vuldb.com/?ctiid.341789 | Permissions Required VDB Entry |
| https://vuldb.com/?id.341789 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.735349 | Third Party Advisory VDB Entry |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-1203 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-1203
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-1203 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-1203 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jan. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:crmeb:crmeb:*:*:*:*:*:*:*:* versions up to (including) 5.6.3 Added Reference Type VulDB: https://github.com/foeCat/CVE/blob/main/CRMEB/jwt_auth_bypass/remote_register_jwt_bypass.md Types: Exploit, Mitigation, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/?ctiid.341789 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.341789 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.735349 Types: Third Party Advisory, VDB Entry -
New CVE Received by [email protected]
Jan. 20, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:H/Au:N/C:P/I:P/A:P) Added CWE CWE-287 Added Reference https://github.com/foeCat/CVE/blob/main/CRMEB/jwt_auth_bypass/remote_register_jwt_bypass.md Added Reference https://vuldb.com/?ctiid.341789 Added Reference https://vuldb.com/?id.341789 Added Reference https://vuldb.com/?submit.735349