CVE-2026-66756 Apache Tika: unpack endpoint in tika-server allows configuration with unsecureFeatures=false
Attackers can bypass security restrictions in Apache Tika's unpack endpoint to access unauthorized files or resources.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-66756?
CVE-2026-66756 is a medium-severity path traversal vulnerability in Apache Tika, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper Protection of Alternate Path vulnerability in Apache Tika.
This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.
Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.
Weakness: CWE-424
Which versions are affected by CVE-2026-66756?
It affects 1 product.
Products include Apache Tika.
How do I fix CVE-2026-66756?
No fix has been published for CVE-2026-66756 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-66756 being exploited?
There is no known exploitation of CVE-2026-66756 in the wild and no public exploit code.
Other vulnerabilities in Apache Tika
- CVE-2019-10088 Allocation of Resources Without Limits or Throttling in Apache Tika
- CVE-2025-66516 Apache Tika has XXE vulnerability
- CVE-2025-54988 Apache Tika PDF parser module: XXE vulnerability in PDFParser's handling of XFA
- CVE-2018-1335 Command injection in org.apache.tika:tika-core
- CVE-2019-10094 Allocation of Resources Without Limits or Throttling in Apache Tika
Sources
Also known as GHSA-6m77-jgxr-wx9c.