Apache Tika up to 3.3.1/4.0.0-alpha-1 ISA-Tab Parser path traversal

Summaryinfo

A vulnerability identified as problematic has been detected in Apache Tika up to 3.3.1/4.0.0-alpha-1. Affected is an unknown function of the component ISA-Tab Parser. The manipulation leads to path traversal. This vulnerability is documented as CVE-2026-66755. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Apache Tika up to 3.3.1/4.0.0-alpha-1. It has been rated as problematic. This issue affects some unknown functionality of the component ISA-Tab Parser. 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. The summary by CVE is:

Relative Path Traversal in the ISA-Tab parser in Apache Software Foundation Apache Tika from 1.8 through 3.3.1, and 4.0.0-alpha-1, allows an attacker who can place files in a directory that the application subsequently parses to read arbitrary files accessible to the Tika process and have their contents emitted into the extracted text output, via a "Study Assay File Name" value in the ISA-Tab investigation file that traverses outside the dataset directory. Users are recommended to upgrade to version 3.3.2 or 4.0.0-beta-1, which fixes this issue.

It is possible to read the advisory at lists.apache.org. The identification of this vulnerability is CVE-2026-66755 since 07/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/30/2026). The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

Upgrading to version 3.3.2 or 4.0.0-beta-1 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• Tika

Version

• 3.3.0
• 3.3.1
• 4.0.0-alpha-1

License

• open-source

Website

• Vendor: https://www.apache.org/

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