CVE-2026-31932— Suricata krb5: quadratic complexity in krb5 buffering
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I. Basic Information for CVE-2026-31932
Vulnerability Information
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Vulnerability Title
Suricata krb5: quadratic complexity in krb5 buffering
Source: NVD (National Vulnerability Database)
Vulnerability Description
Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, inefficiency in KRB5 buffering can lead to performance degradation. This issue has been patched in versions 7.0.15 and 8.0.4.
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:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
算法复杂性
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 7.0.15之前版本和8.0.4之前版本存在安全漏洞，该漏洞源于KRB5缓冲效率低下，可能导致性能下降。
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-2026-31932
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Same Patch Batch · OISF · 2026-04-02 · 6 CVEs total
| CVE-2026-31933 | 7.5 HIGH | Suricata stream: quadratic complexity in stream inspection |
| CVE-2026-31931 | 7.5 HIGH | Suricata tls: null dereference in tls.alpn rule keyword |
| CVE-2026-31934 | 7.5 HIGH | Suricata smtp/mine: quadratic complexity in extracting urls |
| CVE-2026-31935 | 7.5 HIGH | Suricata http2: unbounded resource consumption |
| CVE-2026-31937 | 7.5 HIGH | Suricata dcerpc: quadratic complexity in dcerpc buffering |
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-2026-31931
Suricata tls: null dereference in tls.alpn rule keyword
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-2026-31931
Suricata tls: null dereference in tls.alpn rule keyword
Same weakness: CWE-407
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Quadratic fragment-name uniqueness check causes denial of se - CVE-2026-40476
graphql-php: Denial of Service via quadratic complexity in O - CVE-2026-35599
Vikunja has an Algorithmic Complexity DoS in Repeating Task - CVE-2026-6042
musl libc GB18030 4-byte Decoder iconv.c iconv algorithmic c - CVE-2026-33033
Potential denial-of-service vulnerability in MultiPartParser
V. Comments for CVE-2026-31932
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