CVE-2026-59879
A remote, anonymous attacker can exploit multiple vulnerabilities in IBM Tivoli Netcool/OMNIbus to conduct a denial of service attack.
CSIRTS triage
- What
- Multiple vulnerabilities in Immutable.js dependency enable denial of service attacks.
- Who is affected
- IBM Tivoli Netcool/OMNIbus deployments using affected Immutable.js versions.
- Urgency
- Medium severity denial of service; not currently exploited.
- Action
- Update Immutable.js dependency to a patched version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.66% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all EPSS-scored CVEs.
Advisory coverage (3)
- medium[NEW] [medium] IBM Tivoli Netcool/OMNIbus (Immutable.js): Multiple vulnerabilities enable denial of servicecert-bund · 2026-08-10
- highGHSA-v56q-mh7h-f735: Immutable.js `List` 32-bit trie overflow → unrecoverable DoSghsa · 2026-07-21
- highCVE-2026-59879: Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, Lis…nvd · 2026-07-08
External references
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[](https://www.csirts.com/cve/CVE-2026-59879)