Monitor vulnerabilities like this one.
Sign up free to get alerted when software you use is affected.
7.5
Suricata Network Engine Can Slow Down Under Heavy Traffic
DEBIAN-CVE-2026-31933
Summary
A specific type of network traffic can cause Suricata to slow down, impacting its ability to monitor and respond to threats. This issue has been fixed in versions 7.0.15 and 8.0.4, which are recommended to be installed. Upgrading to these versions will help maintain Suricata's performance.
What to do
- Update debian suricata to version 1:8.0.4-1.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| debian | suricata | All versions | – |
| debian | suricata | All versions | – |
| debian | suricata | All versions | – |
| debian | suricata | <= 1:8.0.4-1 | 1:8.0.4-1 |
Original title
Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been ...
Original description
Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, specially crafted traffic can cause Suricata to slow down, affecting performance in IDS mode. This issue has been patched in versions 7.0.15 and 8.0.4.
- https://security-tracker.debian.org/tracker/CVE-2026-31933 Vendor Advisory
Published: 2 Apr 2026 · Updated: 3 Apr 2026 · First seen: 3 Apr 2026