OISF Suricata up to 8.0.6 type confusion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k1.68

Summaryinfo

A vulnerability has been found in OISF Suricata up to 8.0.6 and classified as very critical. Affected by this issue is some unknown functionality. Performing a manipulation results in type confusion. This vulnerability is identified as CVE-2026-94083. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as very critical, was found in OISF Suricata up to 8.0.6. This affects an unknown part. The manipulation with an unknown input leads to a type confusion vulnerability. CWE is classifying the issue as CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at forum.suricata.io. This vulnerability is uniquely identified as CVE-2026-94083 since 09/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/20/2026).

Upgrading to version 8.0.7 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-83638). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.7
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.4
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Type confusion
CWE: CWE-843
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Suricata 8.0.7

Timelineinfo

09/20/2026 Advisory disclosed
09/20/2026 +0 days CVE reserved
09/20/2026 +0 days VulDB entry created
09/20/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: forum.suricata.io
Status: Confirmed

CVE: CVE-2026-94083 (🔒)
GCVE (CVE): GCVE-0-2026-94083
GCVE (VulDB): GCVE-100-407991
EUVD: 🔒

Entryinfo

Created: 09/20/2026 03:49
Updated: 09/20/2026 05:43
Changes: 09/20/2026 03:49 (62), 09/20/2026 05:43 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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