CVE-2026-26936— Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service
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I. Basic Information for CVE-2026-26936
Vulnerability Information
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Vulnerability Title
Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service
Source: NVD (National Vulnerability Database)
Vulnerability Description
Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1333
Source: NVD (National Vulnerability Database)
Vulnerability Title
Elastic Kibana 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Kibana是Elastic公司的一个可用数据可视化仪表板软件。 Elastic Kibana存在安全漏洞，该漏洞源于AI推理匿名化引擎存在低效的正则表达式复杂性，可能导致通过正则表达式指数膨胀造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-26936
| # | POC Description | Source Link | Shenlong Link |
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Same Patch Batch · Elastic · 2026-02-26 · 6 CVEs total
| CVE-2026-26938 | 8.6 HIGH | Improper Neutralization of Special Elements Used in a Template Engine in Kibana Workflows |
| CVE-2026-26937 | 6.5 MEDIUM | Uncontrolled Resource Consumption in Kibana Leading to Denial of Service |
| CVE-2026-26935 | 6.5 MEDIUM | Improper Input Validation in Kibana Leading to Denial of Service |
| CVE-2026-26934 | 6.5 MEDIUM | Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service |
| CVE-2026-26932 | 5.7 MEDIUM | Improper Validation of Array Index in Packetbeat Leading to Denial of Service |
IV. Related Vulnerabilities
Same product: Kibana
- CVE-2026-33458
Server-Side Request Forgery (SSRF) in Kibana One Workflow Le - CVE-2026-33459
Uncontrolled Resource Consumption in Kibana Leading to Denia - CVE-2026-33460
Incorrect Authorization in Kibana Fleet Leading to Informati - CVE-2026-33461
Incorrect Authorization in Kibana Fleet Leading to Informati - CVE-2026-4498
Execution with Unnecessary Privileges in Kibana Leading to r
Same vendor: Elastic
- CVE-2026-33467
Improper Verification of Cryptographic Signature in Elastic - CVE-2026-33466
Improper Limitation of a Pathname to a Restricted Directory - CVE-2026-33458
Server-Side Request Forgery (SSRF) in Kibana One Workflow Le - CVE-2026-33459
Uncontrolled Resource Consumption in Kibana Leading to Denia - CVE-2026-33460
Incorrect Authorization in Kibana Fleet Leading to Informati
Same weakness: CWE-1333
- CVE-2026-33079
Mistune ReDoS in LINK_TITLE_RE allows denial of service with - CVE-2026-41040
GROWI 安全漏洞 - CVE-2026-40319
Giskard has a Regular Expression Denial of Service (ReDoS) i - CVE-2026-5986
Zod jsVideoUrlParser util.js getTime redos - CVE-2026-35041
ReDoS in fast-jwt when using RegExp in allowed* leading to C
V. Comments for CVE-2026-26936
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