What is the CVSS score of CVE-2026-22260?

CVE-2026-22260 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2026-22260?

Within 24 hours: Identify all Suricata instances running versions 8.0.0-8.0.2 and document their criticality and network location. Within 7 days: Apply vendor patch to upgrade Suricata to version 8.0.3 or later, prioritizing production IDS/IPS sensors. Within 30 days: Verify patch deployment across all Suricata installations and validate normal operation through log review and alert generation testing.

Suricata CVE-2026-22260

HIGH

Uncontrolled Recursion (CWE-674)

2026-01-27 security-advisories@github.com

Denial Of Service Stack Overflow Suricata Suse Oisf

7.5

CVSS 3.1 · GitHub Advisory

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Craft malicious network traffic
Exploit

Exceed request-body-limit or response-body-limit parameters
Execution

Trigger stack overflow in body parsing
Impact

Crash Suricata IDS process

Vulnerability Assessment

Weakness	CWE CWE-674 OWASP Top 10:2025 A06:2021 - Vulnerable and Outdated Components ASVS 5.0 V15 - Secure Coding and Architecture Recursion depth limits
Exploitation Conditions	Suricata versions 8.0.0 through 8.0.2 with non-default request-body-limit or response-body-limit configuration values. Remote unauthenticated attacker can send crafted HTTP traffic to monitoring interface.
Impact	CVSS 7.5 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: None. User interaction: None. Exploitable via remote/network.
Exploit ScenarioDerived	A remote attacker could exploit this vulnerability to compromise the affected system.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

Suricata versions 8.0.0 through 8.0.2 are susceptible to a stack overflow crash when processing network traffic with improperly configured body size limits. An unauthenticated remote attacker can trigger a denial of service by sending crafted requests that exceed the application's stack capacity. A patch is available in version 8.0.3, or administrators can apply the workaround of using default values for request-body-limit and response-body-limit configurations.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:55 CVSS 7.5

Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, Suricata can crash with a stack overflow. [CVSS 7.5 HIGH]

RemediationAI

A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

Classified as CWE-674 (Uncontrolled Recursion). Affects Suricata. Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, Suricata can crash with a stack overflow. Version 8.0.3 patches the issue. As a workaround, use default values for request-body-limit and response-body-limit.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SUSE HIGH

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Patch released

Jan 29, 2026 - 21:03 nvd

Patch available

CVE Published

Jan 27, 2026 - 18:15 nvd

HIGH 7.5

DescriptionGitHub Advisory

Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, Suricata can crash with a stack overflow. Version 8.0.3 patches the issue. As a workaround, use default values for request-body-limit and response-body-limit.

Executive ViewAI

Why It Matters

Suricata versions 8.0.0 through 8.0.2 are vulnerable to denial-of-service attacks that can crash the network monitoring engine, potentially blinding security monitoring capabilities. Organizations running affected Suricata versions risk losing visibility into network threats during an active attack, undermining incident detection and response capabilities.

Business Impact: High

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.0%

Top 95% exploitable

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Stack-based Buffer Overflow HIGH

A stack-based buffer overflow occurs when a program writes more data to a buffer located on the stack than it was allocated to hold.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)GitHub Advisory

cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*

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