EXECUTIVE SUMMARY:
CVE-2026-48708 with a CVSS score of 7.5 is a Concurrent Template Parsing Race Condition vulnerability affecting OliveTin versions 3000.0.0 and prior. This technical flaw arises because the application’s template engine utilizes a single shared instance without proper synchronization across multiple goroutines. An attacker with low privileges can exploit this vulnerability over the network by initiating concurrent action requests, which is the standard mode of operation for the software. By doing so, they trigger a race condition where one request’s template parsing overwrites the data structure used by another, leading to cross-user command contamination. This capability allows the attacker to execute unintended shell commands with the arguments of a different user, significantly compromising system integrity and confidentiality. The business impact is severe, potentially resulting in unauthorized data access, system instability through runtime panics, and the execution of arbitrary or destructive commands. Exploitation is contingent upon the system handling multiple simultaneous requests, which creates the necessary interleaving of parse and execute operations to trigger the defect.[/subscribe_to_unlock_form]
EXECUTIVE SUMMARY:
CVE-2026-48708 with a CVSS score of 7.5 is a Concurrent Template Parsing Race Condition vulnerability affecting OliveTin versions 3000.0.0 and prior. This technical flaw arises because the application’s template engine utilizes a single shared instance without proper synchronization across multiple goroutines. An attacker with low privileges can exploit this vulnerability over the network by initiating concurrent action requests, which is the standard mode of operation for the software. By doing so, they trigger a race condition where one request’s template parsing overwrites the data structure used by another, leading to cross-user command contamination. This capability allows the attacker to execute unintended shell commands with the arguments of a different user, significantly compromising system integrity and confidentiality. The business impact is severe, potentially resulting in unauthorized data access, system instability through runtime panics, and the execution of arbitrary or destructive commands. Exploitation is contingent upon the system handling multiple simultaneous requests, which creates the necessary interleaving of parse and execute operations to trigger the defect.[emaillocker id="1283"]
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REFERENCES:
The following reports contain further technical details:
https://github.com/advisories/GHSA-7fq5-7wr8-rjwj