OISF Suricata up to 7.0.15/8.0.4 HTTP/2 Decompression allocation of resources

Summaryinfo

A vulnerability, which was classified as critical, was found in OISF Suricata up to 7.0.15/8.0.4. Affected is an unknown function of the component HTTP2 Decompression. Executing a manipulation can lead to allocation of resources. This vulnerability is tracked as CVE-2026-46387. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in OISF Suricata up to 7.0.15/8.0.4. It has been declared as critical. This vulnerability affects some unknown functionality of the component HTTP2 Decompression. The manipulation with an unknown input leads to a allocation of resources vulnerability. The CWE definition for the vulnerability is CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. As an impact it is known to affect availability. CVE summarizes:

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, Suricata's HTTP/2 decompression path could grow the decompressed response-body buffer without an effective upper bound. A crafted HTTP/2 DATA payload using a high compression ratio, such as gzip, deflate, or brotli compressed data, could cause Suricata to allocate excessive memory while decompressing the payload. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, disable HTTP2.

The advisory is available at github.com. This vulnerability was named CVE-2026-46387 since 05/13/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful 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 7.0.16 or 8.0.5 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• OISF

Name

• Suricata

Version

• 7.0.0
• 7.0.1
• 7.0.2
• 7.0.3
• 7.0.4
• 7.0.5
• 7.0.6
• 7.0.7
• 7.0.8
• 7.0.9
• 7.0.10
• 7.0.11
• 7.0.12
• 7.0.13
• 7.0.14
• 7.0.15
• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4

License

• open-source

Website

• Product: https://github.com/OISF/suricata/

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