Use-after-free in Suricata - CVE-2026-45752
Published: June 3, 2026
Vulnerability identifier: #VU133274
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-45752
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Open Information Security Foundation
Affected software:
Suricata
Suricata
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to use-after-free in decompress transform pipeline when processing network traffic with certain chained detection transforms. A remote attacker can trigger the vulnerable code path to cause a denial of service.
Exploitation requires a malicious rule that chains gunzip or zlib_deflate with max-size greater than 4096 after another transform.
How to mitigate CVE-2026-45752
Install security update from vendor's website.