OISF Suricata up to 7.0.14/8.0.3 Traffic algorithmic complexity

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.92-

Summaryinfo

A vulnerability was found in OISF Suricata up to 7.0.14/8.0.3. It has been declared as problematic. The impacted element is an unknown function of the component Traffic Handler. Such manipulation leads to algorithmic complexity. This vulnerability is listed as CVE-2026-31933. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in OISF Suricata up to 7.0.14/8.0.3. It has been rated as problematic. Affected by this issue is some unknown processing of the component Traffic Handler. The manipulation with an unknown input leads to a algorithmic complexity vulnerability. Using CWE to declare the problem leads to CWE-407. An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached. Impacted is availability. CVE summarizes:

Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been patched in versions 7.0.15 and 8.0.4.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-31933 since 03/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 7.0.15 or 8.0.4 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub_M): 🔒

CVSSv2info

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

Exploitinginfo

Class: Algorithmic complexity
CWE: CWE-407 / CWE-404
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 7.0.15/8.0.4

Timelineinfo

03/10/2026 CVE reserved
04/02/2026 +22 days Advisory disclosed
04/02/2026 +0 days VulDB entry created
04/02/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 8272
Status: Confirmed

CVE: CVE-2026-31933 (🔒)
GCVE (CVE): GCVE-0-2026-31933
GCVE (VulDB): GCVE-100-354878

Entryinfo

Created: 04/02/2026 16:57
Changes: 04/02/2026 16:57 (65)
Complete: 🔍
Cache ID: 216:B5E:103

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