How severe is CVE-2026-22261?

CVE-2026-22261 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-22261 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-22261?

CVE-2026-22261 affects Oisf Suricata. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-22261?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-22261 have an EU (EUVD) identifier?

Yes. CVE-2026-22261 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4786.

When was CVE-2026-22261 published?

CVE-2026-22261 was published on 2026-01-27 and last updated on 2026-06-17.

CVE-2026-22261

CVE-2026-22261 is a low-severity vulnerability in Oisf Suricata with a CVSS 3.x base score of 3.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1050.

Key facts

Severity: Low (CVSS 3.x base score 3.7)
EPSS exploit prediction: 0% (23rd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-4786
Weakness: CWE-1050
Affected product: Oisf Suricata
Published: 2026-01-27
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-22261?: 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.
How severe is CVE-2026-22261?: CVE-2026-22261 has a CVSS 3.x base score of 3.7, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-22261 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22261?: CVE-2026-22261 affects Oisf Suricata. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22261?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-22261 have an EU (EUVD) identifier?: Yes. CVE-2026-22261 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-4786.
When was CVE-2026-22261 published?: CVE-2026-22261 was published on 2026-01-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*

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