Algorithmic Complexity Affecting suricata package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published19 Sept 2026
- disclosed18 Sept 2026
Introduced: 18 Sep 2026
NewCVE-2026-71418 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest suricata.
NVD Description
Note: Versions mentioned in the description apply only to the upstream suricata package and not the suricata package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, DNS-over-HTTP/2 processing in rust/src/http2/http2.rs retains previously processed HTTP/2 DATA frame contents instead of clearing the internal buffer. Multiple DATA frames with the EndOfStream flag set can grow the buffer to its 65 KiB limit while causing all prior contents to be processed again, producing quadratic CPU complexity, degraded packet processing, loss of monitoring visibility, or denial of service. This issue is fixed in version 8.0.6.
References
- https://advisory.echohq.com/cve/CVE-2026-71418
- https://github.com/OISF/suricata/commit/1731805967edf5d31448db2ae43cf72c6cf46c11
- https://github.com/OISF/suricata/commit/26c26dea84f00de95151a0e16d21c1fcafac9648
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6
- https://github.com/OISF/suricata/security/advisories/GHSA-xjgq-3qw4-jp5f
- https://redmine.openinfosecfoundation.org/issues/8725