cve.bz

CVE-2026-1229

2.9 lowEPSS 0.4%

Low (2.9) in cloudflare circl. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in github.com/cloudflare/circl 1.6.3.

The CombinedMult function in the CIRCL ecc/p384 package (secp384r1 curve) produces an incorrect value for specific inputs. The issue is fixed by using complete addition formulas. ECDH and ECDSA signing relying on this curve are not affected. The bug was fixed in v1.6.3 https://github.com/cloudflare/circl/releases/tag/v1.6.3 .

Severity

CVSS 4.0

2.9 low
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P/S:N/AU:Y/U:Amber

CVSS 3.1

9.8 critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.4% chance of exploitation in the next 30 days; higher than 36% of CVEs (scores of 2026-10-31)
CWE
CWE-682
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-q9hv-hpm4-hj6xGogithub.com/cloudflare/circl<1.6.31.6.3
GO-2026-4550Gogithub.com/cloudflare/circl<1.6.31.6.3

References

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