CVE-2026-1202 is an improper authentication vulnerability identified in CRMEB, a customer relationship management and e-commerce backend platform, affecting versions 5.6.0 through 5.6.3. The vulnerability resides in the appleLogin function within the crmeb/app/api/controller/v1/LoginController.php file. Specifically, the openId parameter, which is presumably used to authenticate users via Apple login integration, can be manipulated by an attacker to bypass authentication controls. This manipulation allows an attacker to remotely authenticate without valid credentials, as the system fails to properly verify the authenticity or integrity of the openId argument. The vulnerability requires no privileges, no user interaction, and can be exploited over the network, making it accessible to a wide range of attackers. The CVSS v4.0 base score is 6.9 (medium severity), reflecting the ease of exploitation and the potential for partial confidentiality, integrity, and availability impacts. The vendor was notified early but has not issued any patches or advisories, and no official fixes are currently available. Although no confirmed exploits in the wild have been reported, publicly available proof-of-concept code increases the likelihood of exploitation attempts. This vulnerability could allow attackers to gain unauthorized access to CRMEB-managed systems, potentially leading to data breaches, unauthorized transactions, or further lateral movement within affected networks.

For European organizations using CRMEB, this vulnerability poses a significant risk of unauthorized access to customer and business data managed within the CRMEB platform. Given CRMEB's role in managing customer relationships and e-commerce operations, exploitation could lead to data confidentiality breaches, unauthorized modification of customer records, fraudulent transactions, and disruption of business processes. The improper authentication could also be leveraged as a foothold for further attacks within the corporate network, increasing the risk of broader compromise. Organizations in sectors such as retail, finance, and services that rely heavily on CRMEB for customer data management are particularly vulnerable. The lack of vendor response and absence of patches exacerbate the risk, requiring organizations to implement compensating controls. Additionally, the public availability of exploit code increases the likelihood of opportunistic attacks targeting European companies, especially those with high-value customer data or e-commerce operations.

Since no official patches are available, European organizations should implement immediate compensating controls. First, enforce strict input validation and sanitization on the openId parameter at the application or web server level to detect and block malformed or suspicious authentication requests. Second, deploy Web Application Firewalls (WAFs) with custom rules to monitor and block exploitation attempts targeting the appleLogin endpoint. Third, conduct thorough logging and continuous monitoring of authentication activities to identify anomalies such as repeated failed or suspicious login attempts. Fourth, isolate or segment CRMEB instances from critical internal networks to limit potential lateral movement if compromised. Fifth, consider disabling the Apple login feature temporarily if feasible, until a vendor patch is released. Finally, maintain up-to-date backups of CRMEB data and configurations to enable recovery in case of compromise. Organizations should also engage with CRMEB vendors or community forums to track any forthcoming patches or advisories.