A security vulnerability has been detected in klaussilveira GitList 2.0.0. Affected by this vulnerability is the function getDefaultBranch of the file src/SCM/System/Git/CommandLine.php of the component Git Command Line. Such manipulation leads to os command injection. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 3.0.0-beta addresses this issue. The name of the patch is 88cf2866083d5f7c20d9d565c45f828a7ad1516b. Upgrading the affected component is advised.

A critical OS command injection vulnerability (CVE-2026-82668) has been identified in klaussilveira GitList version 2.0.0. The vulnerability resides in the getDefaultBranch function within the file src/SCM/System/Git/CommandLine.php of the Git Command Line component. Attackers can exploit this flaw remotely without requiring physical access. A public exploit has been disclosed and may already be in use. The vulnerability allows arbitrary OS command execution through manipulation of the affected function. A patch (commit 88cf2866083d5f7c20d9d565c45f828a7ad1516b) has been released as part of GitList version 3.0.0-beta. Users are strongly advised to upgrade to the patched version immediately to mitigate the risk.