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OpenAdvisories
High · 7.5 CVE-2026-46387 EUVD-2026-75508

Suricata http2: decompression bomb can cause denial of service in Suricata

Published Sep 10, 2026 · Updated Sep 10, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
OISF suricata < 7.0.16, >= 8.0.0, < 8.0.5 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 suricata 1:8.0.5-1 —
Debian 13 suricata No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 suricata No fix yet —
Ubuntu 26.04 LTS suricata No fix yet —
Ubuntu 24.04 LTS suricata No fix yet —
Ubuntu 22.04 LTS suricata No fix yet —
Ubuntu 18.04 LTS suricata No fix yet —
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu 16.04 LTS suricata No fix yet —
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed suricata 8.0.5-1.1 openSUSE-SU-2026:10885-1

Advisories 1

References