In browser editing in Atlassian Bitbucket Server from version 4.13.0 before 5.4.8 (the fixed version for 4.13.0 through 5.4.7), 5.5.0 before 5.5.8 (the fixed version for 5.5.x), 5.6.0 before 5.6.5 (the fixed version for 5.6.x), 5.7.0 before 5.7.3 (the fixed version for 5.7.x), and 5.8.0 before 5.8.2 (the fixed version for 5.8.x), allows authenticated users to gain remote code execution using the in browser editing feature via editing a symbolic link within a repository.

An issue was discovered in ClipBucket before 4.0.0 Release 4902. A malicious file can be uploaded via the name parameter to actions/beats_uploader.php or actions/photo_uploader.php, or the coverPhoto parameter to edit_account.php.

An issue was discovered in ClipBucket before 4.0.0 Release 4902. Any OS commands can be injected via shell metacharacters in the file_name parameter to /api/file_uploader.php or /actions/file_downloader.php.

An issue was discovered in ClipBucket before 4.0.0 Release 4902. SQL injection vulnerabilities exist in the actions/vote_channel.php channelId parameter, the ajax/commonAjax.php email parameter, and the ajax/commonAjax.php username parameter.

The download commit resource in Atlassian Bitbucket Server from version 5.1.0 before version 5.1.7, from version 5.2.0 before version 5.2.5, from version 5.3.0 before version 5.3.3 and from version 5.4.0 before version 5.4.1 allows remote attackers to write files to disk potentially allowing them to gain code execution, exploit CVE-2017-1000117 if a vulnerable version of git is in use, and or determine if an internal service exists via an argument injection vulnerability in the at parameter.

Various plugin servlet resources in Atlassian Bitbucket Server before version 5.3.7 (the fixed version for 5.3.x), from version 5.4.0 before 5.4.6 (the fixed version for 5.4.x), from version 5.5.0 before 5.5.6 (the fixed version for 5.5.x), from version 5.6.0 before 5.6.3 (the fixed version for 5.6.x), from version 5.7.0 before 5.7.1 (the fixed version for 5.7.x) and before 5.8.0 allow remote attackers to conduct clickjacking attacks via framing various resources that lacked clickjacking protection.

The Github repository importer in Atlassian Bitbucket Server before version 5.3.0 allows remote attackers to determine if a service they could not otherwise reach has open ports via a Server Side Request Forgery (SSRF) vulnerability.

The repository settings resource in Atlassian Bitbucket Server before version 5.6.0 allows remote attackers to read the first line of arbitrary files via a path traversal vulnerability through the default branch name.

The git repository tag rest resource in Atlassian Bitbucket Server from version 3.7.0 before 4.14.11 (the fixed version for 4.14.x), from version 5.0.0 before 5.0.9 (the fixed version for 5.0.x), from version 5.1.0 before 5.1.8 (the fixed version for 5.1.x), from version 5.2.0 before 5.2.6 (the fixed version for 5.2.x), from version 5.3.0 before 5.3.4 (the fixed version for 5.3.x), from version 5.4.0 before 5.4.2 (the fixed version for 5.4.x), from version 5.5.0 before 5.5.1 (the fixed version for 5.5.x) and before 5.6.0 allows remote attackers to read arbitrary files via a path traversal vulnerability through the name of a git tag.

It is possible to bypass the bitbucket auto-unapprove plugin via minimal brute-force because it is relying on asynchronous events on the back-end. This allows an attacker to merge any code into unsuspecting repositories. This affects all versions of the auto-unapprove plugin, however since the auto-unapprove plugin is not bundled with Bitbucket Server it does not affect any particular version of Bitbucket.