Red Hat Security Advisory: Red Hat Lightspeed (formerly Insights) for Runtimes security update
Affects Red HatSource GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.5 High.
Data as of 13 Nov 2026, 13:04 UTC
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitation evidence
Disclosed: evidence found.
CVE published 22 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| FasterXMLjackson-core | Affected
| Fixed in– |
| FasterXMLjackson-core | Affected
| Fixed in– |
MavenFasterXML/com.fasterxml.jackson.core:jackson-corepkg:maven/FasterXML/com.fasterxml.jackson.core:jackson-coreOther threats | Affected
| Fixed in– |
MavenFasterXML/tools.jackson.core:jackson-corepkg:maven/FasterXML/tools.jackson.core:jackson-coreOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
Description
An update is now available for Red Hat Lightspeed (formerly Insights) for Runtimes on RHEL 9. Security fix(es): * Jackson-core: Denial of Service via regular expression backtracking (CVE-2026-89407) * 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.
References
- access.redhat.com/errata/RHSA-2026:95686 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-89407 (opens in a new tab)
- access.redhat.com/security/cve/CVE-2026-89425 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_95686.json (opens in a new tab)