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CVE-2026-22261
Suricata eve/alert: http1 xff handling can lead to denial of service
Low3.7EPSS 0.37%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Low3.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVDNVD · Analyzed | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
- EPSS (exploitation in 30 days)
- 0.37% · top 69% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.7.
Weakness
Affected products
References (4)
- https://github.com/OISF/suricata/security/advisories/GHSA-5jvg-5j3p-34cf (opens in a new tab)x_refsource_CONFIRM
- https://github.com/OISF/suricata/commit/3f0725b34c7871c2de4346c8af872f10f4501e44 (opens in a new tab)x_refsource_MISC
- https://github.com/OISF/suricata/commit/af246ae7ab1b70c09f83c0619b253095ccc18667 (opens in a new tab)x_refsource_MISC
- https://redmine.openinfosecfoundation.org/issues/8156 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-22261)Record last updated .