EUVD-2026-26382
GHSA-32px-ccfx-cxq3
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionCVE.org
An issue in Krayin CRM v.2.1.5 and fixed in v.2.1.6 allows a remote attacker to execute arbitrary code via the compose email function
AnalysisAI
Remote code execution in Krayin CRM 2.1.5 allows authenticated attackers to execute arbitrary code through the compose email function via code injection. The vulnerability was patched in version 2.1.6 released by the vendor. A public proof-of-concept exploit exists on GitHub (cybercrewinc/CVE-2026-36340), significantly lowering the barrier to exploitation. With CVSS 8.1 (High) and network accessibility requiring only low-privilege authentication, this presents immediate risk to organizations running unpatched Krayin CRM instances, particularly those exposing the CRM to internal users or external partners.
Technical ContextAI
Krayin CRM is an open-source customer relationship management application built on Laravel framework. This vulnerability stems from CWE-94 (Improper Control of Generation of Code/Code Injection) affecting the email composition functionality. The flaw allows injection of executable code through user-controlled input in the compose email feature, which is then processed without adequate sanitization or validation. The Laravel-based architecture suggests the vulnerability may involve unsafe evaluation of user input during email template processing or SMTP configuration handling. Interestingly, the v2.1.6 release notes reference fixing a Cross-Site Scripting (XSS) vulnerability rather than explicitly mentioning RCE, suggesting either the vendor minimized the severity in public communications or the code injection can manifest as both XSS and RCE depending on exploitation context.
RemediationAI
Immediately upgrade to Krayin CRM version 2.1.6 or later from the official GitHub repository (https://github.com/krayin/laravel-crm/releases/tag/v2.1.6). The release specifically addresses this code injection vulnerability alongside XSS issues. Standard Laravel upgrade procedures should be followed including backing up the database, updating composer dependencies, and running database migrations. If immediate patching is not feasible, implement these compensating controls with noted limitations: restrict access to the compose email function through role-based access controls in Krayin settings (reduces attack surface but doesn't eliminate risk from compromised low-privilege accounts); deploy web application firewall rules to filter suspicious input patterns in email composition endpoints (may cause false positives and can be bypassed with encoding techniques); monitor application logs for unusual email composition activity or Laravel error logs indicating code execution attempts (detective control only, does not prevent exploitation). Network-level controls like limiting CRM access to trusted IP ranges reduce remote attack vectors but don't address insider threat scenarios. No compensating control fully mitigates CWE-94 code injection - patching remains the only complete solution.
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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