Vulnerability in OISF Suricata
CVSS score
9.4
EPSS probability
%0.5
Risk score
0.1
Published
22 d ago
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Vulnerability description
DayBreach CVE AI Research
CVE-2026-94083 has vendor, distribution, patch and security-source records on file. We can compare them and prepare an explanation linked to the evidence.
Suricata before 8.0.7 has a DoH2 type confusion that can cause an invalid free, because cleanup code for the HTTP2 state is executed even though the actual state is HTTP1 (when there is a DoH2 request with an HTTP1 to HTTP2 upgrade). This requires app-layer.protocols.doh2 to be enabled, which is the default in 8.x versions.
IMPACT: Affected Products and Software
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 9.4 | CVSS V3_1 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | CVE CNA |
| 9.4 | CVSS V31 | CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-94083 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-94083 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
ikev2: unbounded client transform storage can lead to resource exhaustion
Suricata http2: decompression bomb can cause denial of service in Suricata
Suricata http1: quadratic Content-Disposition processing can lead to denial of service
Suricata http2: protocol-change type confusion can lead to denial of service
Suricata mqtt: unbounded resource consumption from repeated pubrec and pubrel messages
Suricata ldap: unbounded responses per transaction can lead to resource exhaustion
Get this vulnerability through the API
Affected products, version ranges, exploitation status and patch information in a single request, with a free key.
curl -H "x-api-key: $DAYBREACH_API_KEY" \ "https://api.enginteksut.com.tr/api/v1/intel/cves/CVE-2026-94083"