CVE-2026-26932— Improper Validation of Array Index in Packetbeat Leading to Denial of Service
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I. Basic Information for CVE-2026-26932
Vulnerability Information
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Vulnerability Title
Improper Validation of Array Index in Packetbeat Leading to Denial of Service
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper Validation of Array Index (CWE-129) in the PostgreSQL protocol parser in Packetbeat can lead Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted packet causing a Go runtime panic that terminates the Packetbeat process. This vulnerability requires the pgsql protocol to be explicitly enabled and configured to monitor traffic on the targeted port.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
对数组索引的验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Elastic Packetbeat 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elastic Packetbeat是荷兰Elastic公司的一个数据采集器。 Elastic Packetbeat存在安全漏洞，该漏洞源于PostgreSQL协议解析器存在数组索引验证不当，可能导致攻击者通过发送特制数据包引发Go运行时崩溃，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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Elastic | Packetbeat | 9.0.0 ~ 9.2.4 | - |
II. Public POCs for CVE-2026-26932
| # | 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-2026-26936 | 4.9 MEDIUM | Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service |
IV. Related Vulnerabilities
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-129
- CVE-2026-41643
GoBGP: Remote Denial of Service (Panic) in UpdatePathAttrs4B - CVE-2026-40251
Incus out-of-bounds panic in snapshot metadata handling allo - CVE-2026-40886
Argo Workflows: Unchecked annotation parsing in pod informer - CVE-2026-6840
ONE 输入验证错误漏洞 - CVE-2026-40097
Step CA affected by an index out of bounds panic in TPM atte
V. Comments for CVE-2026-26932
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