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GHSA-q9hv-hpm4-hj6x

CIRCL has an incorrect calculation in secp384r1 CombinedMult

Source: GitHub Advisory Database (reviewed) Low CVE-2026-1229

Packages

EcosystemPackageAffectedFixed in
Go github.com/cloudflare/circl < 1.6.3 1.6.3

Details

As written in the advisory (Markdown source, shown as plain text).

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)**.

References

External links from the advisory. They lead to third-party sites.