Vulnerability · Published Apr 2, 2026 · Assigned by GitHub_M
CVE-2026-31932Suricata krb5: quadratic complexity in krb5 buffering
High 7.5
In plain English
A high-severity security flaw in suricata from OISF. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.3%top 79.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Suricata is a network IDS, IPS and NSM engine. Prior to versions 7.0.15 and 8.0.4, inefficiency in KRB5 buffering can lead to performance degradation. This issue has been patched in versions 7.0.15 and 8.0.4.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | suricata | 8.0.6-r0 | ALPINE-CVE-2026-31932 |
| Debian:13 | suricata | 1:7.0.10-1+deb13u4 | DEBIAN-CVE-2026-31932 |
| Debian:14 | suricata | 1:8.0.4-1 | DEBIAN-CVE-2026-31932 |
| Ubuntu:22.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-31932 |
| Ubuntu:24.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-31932 |
| Ubuntu:25.10 | suricata | no fix listed | UBUNTU-CVE-2026-31932 |
| Ubuntu:26.04:LTS | suricata | no fix listed | UBUNTU-CVE-2026-31932 |
| Ubuntu:26.10 | suricata | no fix listed | UBUNTU-CVE-2026-31932 |
Affected products (as reported)
Weakness: CWE-407 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/OISF/suricata/security/advisories/GHSA-rp9m-jcpw-hggr x_refsource_CONFIRM
- https://redmine.openinfosecfoundation.org/issues/8305 x_refsource_MISC