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.
CVE-2026-63452
HIGHPre-NVD 7.57.5
EchelonGraph scoreLOW confidence
This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: secondary
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: —CVSS: 7.5Exploit: None knownExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(low)
- EG Risk
- 38(Track)EG Risk 38/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation0% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- Not listed
Published
September 18, 2026
Last Modified
September 18, 2026
Advisory Details (5)
Auto-updated Sep 18, 2026Patch available. Sources: github, github_commit, github_release.
github_release Patch Available
8.0.6
Patch available: OISF/suricata suricata-8.0.6
https://github.com/OISF/suricata/releases/tag/suricata-8.0.6github_commit Patch Available
commit e369bf29ee5b (OISF/suricata)
Patch available: OISF/suricata suricata-8.0.6 (contains commit e369bf29ee5b)
https://github.com/OISF/suricata/commit/e369bf29ee5bbd0cdf6a98dc4a3357ba43c86a88github_commit
commit 392b6aee2971 (OISF/suricata)
Fix landed in OISF/suricata commit 392b6aee2971 — awaiting tagged release
https://github.com/OISF/suricata/commit/392b6aee2971a4b5e573850f5d832112509bcb5fgithub Patch Available
http1: repeated brotli compression bombs can cause excessive CPU consumption · Advisory · OISF/suricata · GitHub
https://github.com/OISF/suricata/security/advisories/GHSA-j9cx-w9xm-5x84Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 3× in last 7d / 3× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-18 21:17 UTCEG score recompute
- 2026-09-18 20:25 UTCEG score recompute
- 2026-09-18 20:24 UTCMITRE cvelistV5first tracked
Frequently asked(4)
What is CVE-2026-63452?
CVE-2026-63452 is a high vulnerability published on September 18, 2026. 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…
When was CVE-2026-63452 disclosed?
CVE-2026-63452 was first published in the National Vulnerability Database on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
What is the CVSS score of CVE-2026-63452?
CVE-2026-63452 has a CVSS v3 base score of 7.5 (NVD). The EG score is currently aggregating — additional source signals are being incorporated as they become available..
How do I remediate CVE-2026-63452?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-63452, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2026-63452
Is Your Infrastructure Affected by CVE-2026-63452?
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