CVE-2026-63452Suricata http1: repeated brotli compression bombs can cause excessive CPU consumption
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the HTTP/1 parser limits decompression work per transaction but does not limit how many small brotli compression bombs a single flow can submit. With response-body-decompress-layer-limit enabled, repeated compressed responses make the decompression paths in rust/htp perform expensive work for every transaction, degrading packet processing and potentially causing loss of monitoring visibility or denial of service. This issue is fixed in version 8.0.6.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-400, CWE-409
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Sep 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OISF suricata oisf:suricata (from the name) | from 8.0.0, < 8.0.6 | CNA record |
oisf suricata oisf:suricata | from 8.0.0 before 8.0.6 | NVD |
References
- https://github.com/OISF/suricata/security/advisories/GHSA-j9cx-w9xm-5x84x-refsource-confirm, mitigation, vendor-advisory
- https://github.com/OISF/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5fx-refsource-misc, patch
- https://github.com/OISF/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88x-refsource-misc, patch
- https://github.com/OISF/suricata/releases/tag/suricata-8.0.6x-refsource-misc, release-notes
- https://redmine.openinfosecfoundation.org/issues/8694x-refsource-misc, permissions-required
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.