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CVE-2026-22263

Suricata http1: quadratic complexity in headers parsing over multiple packets

Published: Jan 27, 2026Updated: Jan 29, 2026 Sources: CVE List NVD BDUCWE-1050
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.4%
Top 68.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-1050NVD-CWE-noinfo

Affected Products

suricataOISF
On-premNetwork Device
Networking Infrastructure / firewall
SuricataOpen Information Security Foundation
On-prem
Security Products / vuln-mgmt-scanner
Межсетевой экран "Ideco UTM"ООО "Айдеко Софтвер"
On-prem
Networking Infrastructure / firewall
suricataoisf
On-premNetwork Device
Networking Infrastructure / firewall
oisfoss-projectNetworking Infrastructureaka suricata, libhtp, suricata-update
open information security foundationoss-projectSecurity Productsaka ofis, suricata, libhtp
ооо "айдеко софтвер"commercialRUNetworking Infrastructureaka aidco software, айде́ко софтвер

Exploitability

Official Patch Available

References

https://github.com/OISF/suricata/security/advisories/GHSA-rwc5-hxj6-hwx7
github.com
https://github.com/OISF/suricata/commit/018a377f74e3eb2b042c6f783ad9043060923428
github.com
https://redmine.openinfosecfoundation.org/issues/8201
redmine.openinfosecfoundation.org
and 5 more references View all →

Timeline

Published
Jan 27, 2026
Last Updated
Jan 29, 2026

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