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CVE Vulnerability Details :
CVE-2026-1229
PUBLISHED
More InfoOfficial Page
Assigner-cloudflare
Assigner Org ID-a22f1246-ba21-4bb4-a601-ad51614c1513
View Known Exploited Vulnerability (KEV) details
Published At-24 Feb, 2026 | 07:58
Updated At-24 Feb, 2026 | 15:10
Rejected At-
▼CVE Numbering Authority (CNA)
Incorrect calculation in CIRCL 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 https://github.com/cloudflare/circl/releases/tag/v1.6.3 .

Affected Products
Vendor
Cloudflare, Inc.Cloudflare
Product
CIRCL
Repo
https://github.com/cloudflare/circl
Platforms
  • Go
Default Status
unaffected
Versions
Affected
  • From CIRCL up to version 1.6.2 before 1.6.3 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-682CWE-682 Incorrect Calculation
Type: CWE
CWE ID: CWE-682
Description: CWE-682 Incorrect Calculation
Metrics
VersionBase scoreBase severityVector
4.02.9LOW
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
Version: 4.0
Base score: 2.9
Base severity: LOW
Vector:
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
finder
Guido Vranken
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/cloudflare/circl
N/A
Hyperlink: https://github.com/cloudflare/circl
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found