OISF Suricata up to 7.0.13/8.0.2 XFF Support excessive platform resource consumption within a loop

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in OISF Suricata up to 7.0.13/8.0.2. This affects an unknown part of the component XFF Support. This manipulation causes excessive platform resource consumption within a loop. This vulnerability is handled as CVE-2026-22261. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in OISF Suricata up to 7.0.13/8.0.2. Affected by this vulnerability is an unknown code of the component XFF Support. The manipulation with an unknown input leads to a excessive platform resource consumption within a loop vulnerability. The CWE definition for the vulnerability is CWE-1050. The product has a loop body or loop condition that contains a control element that directly or indirectly consumes platform resources, e.g. messaging, sessions, locks, or file descriptors. As an impact it is known to affect availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-22261 since 01/07/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 296925 (Linux Distros Unpatched Vulnerability : CVE-2026-22261), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.14 or 8.0.3 eliminates this vulnerability. Applying the patch 3f0725b34c7871c2de4346c8af872f10f4501e44 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (296925). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.6
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔒

CNA Base Score: 3.7
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Excessive platform resource consumption within a loop
CWE: CWE-1050 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 296925
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-22261

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Suricata 7.0.14/8.0.3
Patch: 3f0725b34c7871c2de4346c8af872f10f4501e44

Timelineinfo

01/07/2026 CVE reserved
01/27/2026 +20 days Advisory disclosed
01/27/2026 +0 days VulDB entry created
01/30/2026 +3 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 8156
Status: Confirmed

CVE: CVE-2026-22261 (🔒)
GCVE (CVE): GCVE-0-2026-22261
GCVE (VulDB): GCVE-100-343081

Entryinfo

Created: 01/27/2026 20:49
Updated: 01/30/2026 03:51
Changes: 01/27/2026 20:49 (66), 01/28/2026 15:32 (2), 01/30/2026 03:51 (11)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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