CVE-2026-22264Suricata detect/alert: heap-use-after-free on alert queue expansion
Updated under an hour ago ()
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It affects OISF suricata. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Suricata is a network IDS, IPS and NSM engine. Prior to version 8.0.3 and 7.0.14, an unsigned integer overflow can lead to a heap use-after-free condition when generating excessive amounts of alerts for a single packet. Versions 8.0.3 and 7.0.14 contain a patch. As a workaround, do not run untrusted rulesets or run with less than 65536 signatures that can match on the same packet.
- CVSS
- 7.4 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-416
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Jan 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
OISF suricata oisf:suricata (from the name) | before 7.0.14; from 8.0.0, < 8.0.3 | CNA record |
oisf suricata oisf:suricata | before 7.0.14; from 8.0.0 before 8.0.3 | NVD |
References
- https://github.com/OISF/suricata/security/advisories/GHSA-mqr8-m3m4-2hw5x-refsource-confirm, vendor-advisory
- https://github.com/OISF/suricata/commit/549d7bf60616de8e54686a188196453b5b22f715x-refsource-misc, patch
- https://github.com/OISF/suricata/commit/5789a3d3760dbf33d93fc56c27bd9529e5bdc8f2x-refsource-misc, patch
- https://github.com/OISF/suricata/commit/ac1eb394181530430fb7262969f423a1bf8f209bx-refsource-misc, patch
- https://redmine.openinfosecfoundation.org/issues/8190x-refsource-misc, permissions-required
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.