RHSA-2026:86706 — Security Advisory
Red Hat Security Advisory: jackson-core security update
Severity
ModerateRed Hat Product Security
Products
Official CSAF product identity
Published · October 21, 2026
Updated · November 4, 2026
Topic
An update for jackson-core is now available for Red Hat Enterprise Linux 9.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
Core part of Jackson that defines Streaming API as well as basic shared abstractions.
Security Fix(es):
-
com.fasterxml.jackson/jackson-core: tools.jackson.core/jackson-core: Jackson-core: Denial of Service via regular expression backtracking (CVE-2026-89407)
-
com.fasterxml.jackson.core/jackson-core: Jackson-core: Denial of Service via unbounded StringBuilder growth during malformed token processing (CVE-2026-89425)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.