Incorrect calculation in circl - CVE-2026-1229
Published: February 24, 2026
Vulnerability identifier: #VU123169
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-1229
CWE-ID: CWE-682
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cloudflare
Affected software:
circl
circl
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists due to incorrect calculation within the CombinedMult() function in the CIRCL ecc/p384 package (secp384r1 curve). A remote attacker can pass specially crafted input to the application and perform a denial of service attack.
How to mitigate CVE-2026-1229
Install updates from vendor's website.