CVE-2026-22263

low-risk

Published 2026-01-27

Suricata is a network IDS, IPS and NSM engine. Starting in version 8.0.0 and prior to version 8.0.3, inefficiency in http1 headers parsing can lead to slowdown over multiple packets. Version 8.0.3 patches the issue. No known workarounds are available.

Do I need to act?

0.02% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

NETWORK / LOW complexity

Affected Products (1)

Suricata

Affected Vendors

Oisf

References (3)

Patch https://github.com/OISF/suricata/commit/018a377f74e3eb2b042c6f783ad9043060923428

Vendor Advisory https://github.com/OISF/suricata/security/advisories/GHSA-rwc5-hxj6-hwx7

Permissions Required https://redmine.openinfosecfoundation.org/issues/8201

/ 100

low-risk

Severity 21/34 · High

Exploitability 0/34 · Minimal

Exposure 5/34 · Minimal