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CVE-2026-22261

Suricata eve/alert: http1 xff handling can lead to denial of service

Published: Jan 27, 2026Updated: Jan 29, 2026 Sources: CVE List NVD BDUCWE-1050
NVD MITRE
3.7CVSSLOW
EPSS Score
0.3%
Top 77.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Suricata is a network IDS, IPS and NSM engine. Prior to versions 8.0.3 and 7.0.14, various inefficiencies in xff handling, especially for alerts not triggered in a tx, can lead to severe slowdowns. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, disable XFF support in the eve configuration. The setting is disabled by default.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
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

РОСА ХРОМАО «НТЦ ИТ РОСА»
On-prem
Operating Systems / linux-distro
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
suricataoisf
On-premNetwork Device
Networking Infrastructure / firewall
ао «нтц ит роса»commercialRUOperating Systems
open information security foundationoss-projectSecurity Productsaka ofis, suricata, libhtp
ооо "айдеко софтвер"commercialRUNetworking Infrastructureaka aidco software, айде́ко софтвер
oisfoss-projectNetworking Infrastructureaka suricata, libhtp, suricata-update

Exploitability

Official Patch Available

References

https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44
github.com
https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667
github.com
https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf
github.com
and 2 more references View all →

Timeline

Published
Jan 27, 2026
Last Updated
Jan 29, 2026

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