What’s Vulnerable › Vulnerabilities

CVE-2019-9658

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-03-11 · updated 2026-06-17
• Weakness: CWE-611

Description

Checkstyle before 8.18 loads external DTDs by default.

Affected products

• com.puppycrawl.tools:checkstyle: before 8.18 — fixed in 8.18
• Debian Linux: 8.0
• Fedoraproject Fedora: 28, 29

How to fix

Upgrade to a fixed version: com.puppycrawl.tools:checkstyle 8.18. Check the vendor advisory for mitigations.

References

• https://checkstyle.org/releasenotes.html#Release_8.18
• https://github.com/checkstyle/checkstyle/issues/6474
• https://github.com/checkstyle/checkstyle/issues/6478
• https://github.com/checkstyle/checkstyle/pull/6476
• https://lists.apache.org/thread.html/6bf8bbbca826e883f09ba40bc0d319350e1d6d4cf4df7c9e399b2699%40%3Ccommits.fluo.apache.org%3E
• https://lists.apache.org/thread.html/7eea10e7be4c21060cb1e79f6524c6e6559ba833b1465cd2870a56b9%40%3Cserver-dev.james.apache.org%3E
• https://lists.apache.org/thread.html/994221405e940e148adcfd9cb24ffc6700bed70c7820c55a22559d26%40%3Cnotifications.fluo.apache.org%3E
• https://lists.apache.org/thread.html/a35a8ccb316d4c2340710f610cba8058e87d5376259b35ef3ed2bf89%40%3Cnotifications.accumulo.apache.org%3E
• https://lists.apache.org/thread.html/fff26ee7b59360a0264fef4e8ed9454ef652db2c39f2892a9ea1c9cb%40%3Cnotifications.fluo.apache.org%3E
• https://lists.apache.org/thread.html/rda99599896c3667f2cc9e9d34c7b6ef5d2bbed1f4801e1d75a2b0679%40%3Ccommits.nifi.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2019/04/msg00029.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2BMOPJ2XYE4LB2HM7OMSUBBIYEDUTLWE/

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