CVE-2026-22263

Name: CVE-2026-22263
Creator: NVD / NIST
Published: 2026-01-27T19:16:14.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.40%

Last modified Jun 17, 2026

CVE-2026-22263 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.40% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

EPSS Probability

0.40%

31.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1050

Affected Software

Vendor	Product	Versions
Oisf	Suricata	>= 8.0.0, < 8.0.3

References

https://github.com/OISF/suricata/commit/018a377f74e3eb2b042c6f783ad9043060923428Patch
https://github.com/OISF/suricata/security/advisories/GHSA-rwc5-hxj6-hwx7Vendor Advisory
https://redmine.openinfosecfoundation.org/issues/8201Permissions Required

Timeline

Published: Jan 27, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-22263?

How severe is CVE-2026-22263?

CVE-2026-22263 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.40% probability of exploitation in the next 30 days.

How do I fix CVE-2026-22263?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-22263?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST