7.5

CVE-2026-26935: elastic kibana Improper Input Validation

CVSS: 7.5v3.1HighAnalyzed
Published 26-02-2026Last modified 26-02-2026
Open JSON

Vulnerability summary

CVE-2026-26935 is a high (CVSS 7.5) Improper Input Validation vulnerability in elastic kibana. EPSS estimates a 0.51% chance of exploitation in the next 30 days, higher than 42.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (NVD)
EPSS score
0.51%
0%100%
Low · +0.23 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 26-02-2026
    PublishedVulnerability first disclosed.
  2. 26-02-2026
    Last modifiedVulnerability information updated.

Description

Improper Input Validation (CWE-20) in the internal Content Connectors search endpoint in Kibana can lead Denial of Service via Input Data Manipulation (CAPEC-153)

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.51%

Chance of exploitation in the next 30 days

Percentile

42%

Versus all other CVEs

30-day change

+0.23 pp

From 0.28% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.51%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Elastic1 product
  • kibanaEOL9.3.0 | ≥ 8.4.0, ≤ 8.19.11 | ≥ 9.0.0, ≤ 9.2.5 | ≥ 8.4.0, < 8.19.12 | ≥ 9.0.0, < 9.2.6

1 vendor · 1 product

References

1 links