Kibana is widely used; log-injection could disrupt monitoring and incident response across multiple organizations.
CVE-2026-49091
Kibana log injection via unneutralized input.
Is CVE-2026-49091 being exploited?
Not confirmed. CVE-2026-49091 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 0.32% probability of exploitation in the next 30 days.
How severe is CVE-2026-49091?
CVE-2026-49091 is rated High with a CVSS score of 8.0. 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-2026-49091?
Yes. A fix has been recorded for CVE-2026-49091. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-49091 affect?
CVE-2026-49091 affects Kibana (Elastic). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-49091?
Monitor for updates; apply patch when released; sanitize inputs/logs
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker-provided input logged by Kibana can inject control sequences, altering log display and hindering detection.
Patch when possible
- affected>= 8.0.0 and <= 8.11.0
- affected>= 7.0.0 and <= 7.17.14
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.