ISA-Tab Path Traversal in Apache Tika 1.8-3.3.1/4.0.0-alpha1
CVE-2026-66755 Published on July 30, 2026
Apache Tika: Arbitrary Local File Read in ISArchiveParser
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.
Vulnerability Analysis
CVE-2026-66755 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is a Directory traversal Vulnerability?
The software 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 software 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.
CVE-2026-66755 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-66755
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Affected Versions
Apache Software Foundation Apache Tika:- Version 1.8 and below 3.3.2 is affected.
- Version 4.0.0-alpha-1 and below 4.0.0-beta-1 is affected.