CVE-2026-49091

Improper Output Neutralization for Logs in Kibana Leading to Log Injection

HIGH
8
CVSS Score
Published: July 1, 2026 at 05:21 PM UTC
Updated: October 25, 2026 at 05:10 PM UTC
1 product affected across 1 vendorKibana

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Severity
HIGH8
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

Improper Output Neutralization for Logs (CWE-117) in Kibana can lead to log injection via Log Injection-Tampering-Forging (CAPEC-93). An attacker can supply specially crafted input that is written to log files without proper neutralization. When the log files are subsequently viewed in a terminal that interprets control sequences, the injected content may alter the displayed log data.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.0.0 ≤ v < 7.17.158.0.0 ≤ v < 8.11.17.0.08.0.0
Affected range stops below 7.17.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.11.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8HIGHelastic
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-116

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