Apache Tika: Arbitrary Local File Read in ISArchiveParser
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Tika | 1.8 to before 3.3.2; 4.0.0-alpha-1 to before 4.0.0-beta-1 | 3.3.2, 4.0.0-beta-1 | Patch available | CNA |
- Apache Tika VendorApache Affected 1.8 to before 3.3.2; 4.0.0-alpha-1 to before 4.0.0-beta-1 Fixed in 3.3.2, 4.0.0-beta-1 Patch available CNA
Remediation
- Fix · CNA Apache Tika (Apache Software Foundation) Fixed in 3.3.2, 4.0.0-beta-1
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-66755
- 2026-10-03 Alias added: GHSA-vrmh-37mg-28h3
- 2026-10-27 EPSS moved to the 50th–90th percentile
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More Apache Tika vulnerabilities
- TI-2025-40938 XML external entity injection in Apache Tika core CVSS 3.1CRITICAL 9.8
- TI-2018-01236 From Apache Tika versions 1.7 to 1.17, clients could send carefully crafted headers to… CVSS 3.0HIGH 8.1
- TI-2025-34694 Apache Tika PDF parser module: XXE vulnerability in PDFParser's handling of XFA CVSS 3.1CRITICAL 9.8
- TI-2016-05850 Apache Tika before 1.14 allows Java code execution for serialized objects embedded in… CVSS 3.1CRITICAL 9.8
- TI-2021-13169 An XXE issue in SAXBuilder in JDOM through 2.0.6 allows attackers to cause a denial of… CVSS 3.1HIGH 7.5
- TI-2019-07413 Resource allocation without limits in Apache Tika CVSS 3.0HIGH 8.8
Sources
- CVE-2026-66755 · CVE Program
- CVE-2026-66755 · NVD
- FIRST EPSS
- GHSA-vrmh-37mg-28h3 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-66755 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences