CVE-2026-46387

highpriority · track · 0EPSS 0.009 · 58 %ileUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.85% (58th) EPSS

CVSS 7.5 · high

Is it mine?

2 products

Check your exposure

Who says so?

1 sources

nvd

EPSS · scored 2026-10-27

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.9–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · security-advisories@github.comexploitability 3.9 · impact 3.6

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-409USprimary

affected products (2)

Products and version ranges known to be affected.

oisf suricata< 7.0.16nvdUScpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*
oisf suricata8.0.0 → 8.0.5nvdUScpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*

sources

Which sources assert this record, and when.

nvd NVD CVE.org MITRE

published 2026-09-10modified 2026-09-28

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Related entries.

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+218 more

references (3) nvd

External citations — patches, advisories, analysis.

https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315Release Notes
https://github.com/OISF/suricata/security/advisories/GHSA-45p7-j5wm-8wrxMitigationVendor Advisory
https://redmine.openinfosecfoundation.org/issues/8513Permissions Required

scry

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