[NEW] [medium] IBM Tivoli Netcool/OMNIbus (Immutable.js): Multiple vulnerabilities enable denial of service
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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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2636
Exploitation outlook
EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.
- Low exploitation riskCVE-2026-598790.66% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all EPSS-scored CVEs.
- Low exploitation riskCVE-2026-598800.66% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all EPSS-scored CVEs.
Referenced CVEs
| CVE | CSIRTS overview | External |
|---|---|---|
| CVE-2026-59879 | coverage & exploitation status | NVD · CVE.org |
| CVE-2026-59880 | coverage & exploitation status | NVD · CVE.org |
Same CVEs, other sources
How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.
- highGHSA-xvcm-6775-5m9r: Immutable: Hash-collision algorithmic complexity denial of service in Immutable.Map/Setghsa
- highGHSA-v56q-mh7h-f735: Immutable.js `List` 32-bit trie overflow → unrecoverable DoSghsa
- highCVE-2026-59879: Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, Lis…nvd
- highCVE-2026-59880: Immutable.js provides many Persistent Immutable data structures. Prior to 4.3.9 and 5.1.8, Imm…nvd
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