NULL pointer dereference in Rekor - CVE-2026-23831
Published: January 23, 2026
Vulnerability identifier: #VU121960
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-23831
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within cose v0.0.1 entry implementation. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.
Affected software
Rekor
How to mitigate CVE-2026-23831
Install updates from vendor's website.
Rekor - update to 1.5.0