CVE-2026-49091 json
Improper Output Neutralization for Logs in Kibana Leading to Log Injection
published 2026-07-01 4 mo ago modified 2026-10-25 15 d ago also EUVD-2026-41101
- cvss
- 8.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 24%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- elastic kibana 7.17.15, 8.11.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.32% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.0 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H |
Affected products
- Elastic Kibana
Classification
- Weakness
-
- CWE-116 Improper Encoding or Escaping of Output
References
-
discuss.elastic.co
/t/kibana-7-17-15-8-11-1-security-update-esa-2026-53
vendor-advisory, mitigation
Sources
- CVE List CVE-2026-49091
- NVD CVE-2026-49091
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