CVE-2026-1229
Incorrect calculation in CIRCL secp384r1 CombinedMult
Reported by cloudflare · Published February 24, 2026
github.com/cloudflare/circl is fixed in 1.6.3 (Go Modules)
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 .
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| github.com/cloudflare/circl | Go Modules | 1.6.3 |
| scorecard | Wolfi | 5.4.0-r7 |
| crossplane-provider-aws-kms-fips | Chainguard | 2.4.0-r1 |
| cloudbeat-8.19 | Chainguard | 8.19.12-r1 |
| terragrunt | Wolfi | 0.99.3-r2 |
| trivy-operator-fips | Chainguard | 0.30.0-r2 |
| crossplane-provider-aws-kinesis | Chainguard | 2.4.0-r1 |
| pulumi-kubernetes-operator | Wolfi | 2.5.0-r1 |
| crossplane-provider-aws-route53 | Wolfi | 2.4.0-r1 |
| argo-cd-3.0 | Chainguard | 3.0.23-r3 |
| crossplane-provider-aws-iam | Chainguard | 2.4.0-r1 |
| amazon-ssm-agent | Chainguard | 3.3.3270.0-r6 |
88 more packages have a fixed version. See every fix in Lookup.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Cloudflare | CIRCL | CIRCL up to version 1.6.2 |
| Cloudflare | CIRCL | 1.6.2 |
Timeline
- Feb 24, 2026 EPSS Score (30 in total, the first dated here)
- Feb 24, 2026 CVE Published
- Feb 24, 2026 PoC Published (4 in total, the first dated here)
- Feb 24, 2026 CVE Updated
- Mar 17, 2026 Security Advisory
- Mar 26, 2026 Coalition ESS Score (2 in total, the first dated here)
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-1229
vulnetix vdb fixes CVE-2026-1229Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-1229/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart