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CVE

CVE-2026-1229

CIRCL has an incorrect calculation in secp384r1 CombinedMult
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CVE

CVE-2026-1229

CIRCL has an incorrect calculation in secp384r1 CombinedMult

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
2.9
-
4.0
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:X/V:X/RE:X/U:Amber
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/cloudflare/circl/security/advisories/GHSA-q9hv-hpm4-hj6x, https://nvd.nist.gov/vuln/detail/CVE-2026-1229, https://github.com/cloudflare/circl/pull/583, https://github.com/cloudflare/circl, https://github.com/cloudflare/circl/releases/tag/v1.6.3

Severity

9.8

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.8
EPSS Probability
0.00017%
EPSS Percentile
0.03953%
Introduced Version
0
Fix Available
1.6.3

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