Github CVE-2026-1229
CRITICAL
GHSA-q9hv-hpm4-hj6x
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionNVD
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 .
AnalysisAI
Incorrect computation in CIRCL cryptographic library's CombinedMult function for secp384r1 (P-384) curve. Produces wrong elliptic curve multiplication results for specific inputs, potentially breaking ECDSA signature verification.
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RemediationAI
Within 24 hours: Inventory all applications and systems using CIRCL ecc/p384 package and assess exposure scope; notify security teams and relevant business units. Within 7 days: Implement network segmentation and access controls around affected systems; engage vendor for patch ETA and interim guidance; evaluate alternative cryptographic libraries for migration feasibility. …
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