High severity · published Jul 30, 2026
CVE-2026-66755
Apache Tika: Arbitrary Local File Read in ISArchiveParser
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AT
Apache Tika · Apache Software Foundation
1.8 before 3.3.2; 4.0.0-alpha-1 before 4.0.0-beta-1 · source: vendor
TI
Tika · Apache
1.8 before 3.3.2; 4.0.0; 4.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-66755
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-66755
Mailing List
https://lists.apache.org/thread/0hcctcp9s5lxgq2ookp4o6chltk99f8r
Mailing List
http://www.openwall.com/lists/oss-security/2026/07/30/23
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