CVE-2026-32281
Inefficient policy validation in crypto/x509
Reported by go · Published April 8, 2026
Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| consul-k8s-fips-1.7 | Chainguard | 1.7.13-r3, 1.7.13-r11 |
| image-builder-debugsource | errata.rockylinux.org | 52.1-1.el10 |
| cluster-api-1.8 | Chainguard | 1.8.12-r16 |
| gitlab-workhorse-ce-fips-18.6 | Chainguard | 18.6.6-r2 |
| buildah | errata.rockylinux.org | 1.43.1-2.el10 |
| bank-vaults | Wolfi | 1.32.1-r19 |
| mariadb-operator-fips | Chainguard | 26.3.0-r4, 26.3.0-r2 |
| spegel | Chainguard | 0.7.1-r2, 0.6.0-r12 |
| golang | Amazon Linux | 1.25.9-1.amzn2023.0.1 |
| amazon-cloudwatch-agent-operator | Chainguard | 3.4.2-r3, 3.3.3-r1 |
| golang-misc | Amazon Linux | 1.25.9-1.amzn2.0.1 |
| regclient | Chainguard | 0.11.3-r0 |
87 more packages have a fixed version. See every fix in Lookup.
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Go standard library | crypto/x509 | 0, 1.26.0-0 |
| chainguard | consul-k8s-fips-1.7 | 0, 0 |
| chainguard | cluster-api-1.8 | 0 |
| chainguard | gitlab-workhorse-ce-fips-18.6 | 0 |
| wolfi | bank-vaults | 0 |
| chainguard | mariadb-operator-fips | 0, 0 |
| chainguard | spegel | 0, 0 |
| amazon:2023 | golang | 0 |
| chainguard | amazon-cloudwatch-agent-operator | 0, 0 |
| amazon:2 | golang-misc | 0 |
| chainguard | regclient | 0 |
| chainguard | supercronic | 0, 0 |
| chainguard | step-ca-fips | 0, 0 |
| wolfi | hivemind | * |
| chainguard | nvidia-nsight-compute-13.1 | 0 |
| chainguard | kubevirt-cdi-apiserver-fips-1.6 | 0, 0 |
| chainguard | victoriametrics-operator-fips | 0, 0 |
| chainguard | atlas-1.0-fips | 0, 0 |
| chainguard | kubevirt-cdi-controller-1.5 | 0, 0 |
| chainguard | longhorn-backing-image-manager-fips-1.9 | 0, 0 |
…and 2439 more
Timeline
- Apr 7, 2026 CVE Published
- Apr 8, 2026 PoC Published
- Apr 8, 2026 Security Advisory (230 in total, the first dated here)
- May 18, 2026 EPSS Score (30 in total, the first dated here)
- May 21, 2026 Distribution Patch (242 in total, the first dated here)
- Jun 22, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-32281
vulnetix vdb fixes CVE-2026-32281Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
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