CVE-2026-22263— Suricata http1: quadratic complexity in headers parsing over multiple packets
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-22263
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Suricata http1: quadratic complexity in headers parsing over multiple packets
Source: NVD (National Vulnerability Database)
Vulnerability Description
Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, inefficiency in http1 headers parsing can lead to slowdown over multiple packets. Version 8.0.3 patches the issue. No known workarounds are available.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
循环内过多的平台资源消耗
Source: NVD (National Vulnerability Database)
Vulnerability Title
Suricata 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Suricata是Open Information Security基金会的一个网络IDS、IPS和NSM引擎。 Suricata 8.0.0至8.0.3之前版本存在安全漏洞，该漏洞源于http1标头解析效率低下，可能导致多数据包处理时性能下降。
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-2026-22263
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-22263
请登录查看更多情报信息。
Same Patch Batch · OISF · 2026-01-27 · 7 CVEs total
| CVE-2026-22258 | 7.5 HIGH | Suricata DCERPC: unbounded fragment buffering leads to memory exhaustion |
| CVE-2026-22260 | 7.5 HIGH | Suricata http1: infinite recursion in decompression |
| CVE-2026-22259 | 7.5 HIGH | Suricata dnp3: unbounded transaction growth |
| CVE-2026-22264 | 7.4 HIGH | Suricata detect/alert: heap-use-after-free on alert queue expansion |
| CVE-2026-22262 | 5.9 MEDIUM | Suricata datasets: stack overflow when saving a set |
| CVE-2026-22261 | 3.7 LOW | Suricata eve/alert: http1 xff handling can lead to denial of service |
IV. Related Vulnerabilities
Same product: suricata
- CVE-2026-31937
Suricata dcerpc: quadratic complexity in dcerpc buffering - CVE-2026-31935
Suricata http2: unbounded resource consumption - CVE-2026-31934
Suricata smtp/mine: quadratic complexity in extracting urls - CVE-2026-31933
Suricata stream: quadratic complexity in stream inspection - CVE-2026-31932
Suricata krb5: quadratic complexity in krb5 buffering
Same vendor: OISF
- CVE-2026-31937
Suricata dcerpc: quadratic complexity in dcerpc buffering - CVE-2026-31935
Suricata http2: unbounded resource consumption - CVE-2026-31934
Suricata smtp/mine: quadratic complexity in extracting urls - CVE-2026-31933
Suricata stream: quadratic complexity in stream inspection - CVE-2026-31932
Suricata krb5: quadratic complexity in krb5 buffering
Same weakness: CWE-1050
- CVE-2026-4634
Keycloak: keycloak: denial of service via excessive processi - CVE-2026-22261
Suricata eve/alert: http1 xff handling can lead to denial of - CVE-2025-48866
ModSecurity has possible DoS vulnerability in sanitiseArg ac - CVE-2025-47947
ModSecurity Has Possible DoS Vulnerability - CVE-2025-32907
Libsoup: denial of service in server when client requests a
V. Comments for CVE-2026-22263
No comments yet