# CVE-2018-11796: Apache Tika is vulnerable to entity expansions which can lead to a denial of service attack

Source: https://junglewise.ai/threats/cve-2018-11796-apache-tika-is-vulnerable-to-entity-expansions-which-can-lead-to  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2018-10-17  
License: CC BY 4.0 with a link back

CVE-2018-11796 · Severity: low · CVSS 3 · Published 2018-10-17

Apache Tika is vulnerable to entity expansions which can lead to a denial of service attack

Technologies: [org.apache.tika:tika-core (Maven)](https://junglewise.ai/threats/technologies/org-apache-tika-tika-core). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2018-11796 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2018-11796 being exploited in the wild.

**How severe is CVE-2018-11796?** Low severity, with a CVSS score of 3, published 17 October 2018.

**Which products and versions are affected?** org.apache.tika:tika-core (Maven) ECOSYSTEM:introduced=0.1,fixed=1.19.1.

**Is there a fix for CVE-2018-11796?** Yes. org.apache.tika:tika-core (Maven): upgrade to 1.19.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2018-11796?** Check whether you run org.apache.tika:tika-core (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.apache.tika:tika-core (Maven): upgrade to 1.19.1 or later

  ```sh
  # set org.apache.tika:tika-core to 1.19.1 in your pom.xml or build.gradle
  ```


## Affected products

- org.apache.tika:tika-core (Maven) ECOSYSTEM:introduced=0.1,fixed=1.19.1

## Identifiers

- CVE-2018-11796
- GHSA-h8q5-g2cj-qr5h

## Related threats

- [Apache Tika has XXE vulnerability](https://junglewise.ai/threats/cve-2025-66516-apache-tika-has-xxe-vulnerability)
- [Regular expression denial of service in apache tika](https://junglewise.ai/threats/cve-2022-30973-regular-expression-denial-of-service-in-apache-tika)
- [Regular expression denial of service in apache tika](https://junglewise.ai/threats/cve-2022-30126-regular-expression-denial-of-service-in-apache-tika)
- [Allocation of Resources Without Limits or Throttling in Apache Tika](https://junglewise.ai/threats/cve-2019-10088-allocation-of-resources-without-limits-or-throttling-in-apache)
- [Allocation of Resources Without Limits or Throttling in Apache Tika](https://junglewise.ai/threats/cve-2019-10094-allocation-of-resources-without-limits-or-throttling-in-apache)