CVE-2026-18098
Authenticated XML injection in IBM i allows data disclosure and integrity compromise
Is CVE-2026-18098 being exploited?
Not confirmed. CVE-2026-18098 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.19% probability of exploitation in the next 30 days.
How severe is CVE-2026-18098?
CVE-2026-18098 is rated High with a CVSS score of 8.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-18098?
Yes. A fix has been recorded for CVE-2026-18098. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-18098 affect?
CVE-2026-18098 affects IBM i 7.6, IBM i 7.5, IBM i 7.4, IBM i 7.3. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-18098?
Apply vendor patch/mitigation when released; restrict access to affected interfaces and audit logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote authenticated attacker can exploit XML injection to read sensitive data and alter system integrity, possibly change configs or escalate privileges.
Patch when possible
- affected7.6
- affected7.5
- affected7.4
- affected7.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.