CVE-2022-33879 Incomplete fix and new regex DoS in StandardsExtractingContentHandler

What is CVE-2022-33879?

CVE-2022-33879 is a low-severity denial of service vulnerability in Apache Tika, published on 27 Jun 2022. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

The initial fixes in CVE-2022-30126 and CVE-2022-30973 for regexes in the StandardsExtractingContentHandler were insufficient, and we found a separate, new regex DoS in a different regex in the StandardsExtractingContentHandler. These are now fixed in 1.28.4 and 2.4.1.

Which versions are affected by CVE-2022-33879?

4 open source packages ship an affected version, including org.apache.tika:tika. It affects 1 product.

Products include Apache Tika.

How do I fix CVE-2022-33879?

Upgrade org.apache.tika:tika to a fixed version for your release line: 1.28.4 or 2.4.1.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-33879 being exploited?

There is no known exploitation of CVE-2022-33879 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 High 8.8
• CVE-2025-66516 Apache Tika has XXE vulnerability High 8.4
• CVE-2025-54988 Apache Tika PDF parser module: XXE vulnerability in PDFParser's handling of XFA High 8.4
• CVE-2018-1335 Command injection in org.apache.tika:tika-core High 8.1
• CVE-2019-10094 Allocation of Resources Without Limits or Throttling in Apache Tika High 7.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2022-33879, GHSA-6q8v-2hvm-fx37, UBUNTU-CVE-2022-33879.