Rocket.Chat up to 8.1.0 CustomSounds Storage path traversal

Summaryinfo

A vulnerability categorized as problematic has been discovered in Rocket.Chat up to 8.1.0. Affected is an unknown function of the component CustomSounds Storage. Such manipulation leads to path traversal. This vulnerability is documented as CVE-2026-56845. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Rocket.Chat up to 8.1.0 and classified as problematic. Affected by this issue is an unknown functionality of the component CustomSounds Storage. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality. CVE summarizes:

An unauthenticated path traversal (LFI) vulnerability exists under /custom-sounds/ when CustomSounds storage is configured to FileSystem. By including ../ sequences in the request path, an attacker can read arbitrary files outside the base directory.

The advisory is shared for download at hackerone.com. This vulnerability is handled as CVE-2026-56845 since 06/23/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 7.10.8, 7.11.5, 7.12.5, 7.13.4, 8.0.2, 8.1.1 or 8.2.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-52560). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Chat Software

Name

• Rocket.Chat

Version

• 7.10.0
• 7.10.1
• 7.10.2
• 7.10.3
• 7.10.4
• 7.10.5
• 7.10.6
• 7.10.7
• 7.11.0
• 7.11.1
• 7.11.2
• 7.11.3
• 7.11.4
• 7.12.0
• 7.12.1
• 7.12.2
• 7.12.3
• 7.12.4
• 7.13.0
• 7.13.1
• 7.13.2
• 7.13.3
• 8.0
• 8.0.0
• 8.0.1
• 8.1.0

License

• free

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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