Path Traversal in Apache Tika
CVE-2026-66755
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 class: Path Traversal (Directory Traversal)
EPSS: 0.004 (37.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Apache Tika — versions 4.0.0
- Apache Software Foundation Tika — versions 1.8, 4.0.0-alpha-1
Weakness classification (CWE)
References
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-66755?
- CVE-2026-66755 is a high-severity vulnerability in Apache Tika, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-07-30.
- How severe is CVE-2026-66755?
- High severity. CVSS v3 base score is 7.5 out of 10.