CVE-2026-40890
CVE-2026-40890: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.5
High [CVE-2026-40890] Denial of Service via malformed Markdown input
CVE-2026-40890Source published
Denial of Service via malformed Markdown input. Red Hat rates this moderate (CVSS 7.5). Weakness: CWE-1286. Affected package(s): multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753, multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439, rhacm2/acm-grafana-rhel9:1780677003. Resolved in Red Hat advisory RHSA-2026:21769 — update the affected packages (`sudo dnf update`).
- Related products — impact not confirmed
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439
2 more entries in the full advisory.
- Source-reported affected versions
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779925273
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1780167118
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1778867753
- multicluster-globalhub/multicluster-globalhub-grafana-rhel9:1779579439
1 more entries in the full advisory.
- Source-reported fixed versions
- RHSA-2026:21769
- Mitigation guidance
- Update the affected package(s) to the fixed version shipped in RHSA-2026:21769 (`sudo dnf update` / `yum update`).
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