[UPDATE] [high] Grafana: Multiple vulnerabilities

highCVE-2026-21720 CVE-2026-21721

A remote, anonymous or authenticated attacker can exploit multiple vulnerabilities in Grafana to carry out a Denial of Service attack or gain elevated permissions.

CSIRTS triage

vendor: Grafana product: Grafana Denial of service Privilege escalation

What: Multiple vulnerabilities can be exploited by a remote attacker to carry out Denial of Service attacks or gain elevated permissions.
Who is affected: Both anonymous and authenticated users of Grafana are affected.
Urgency: Remediation is urgent as the vulnerabilities are classified as high severity.
Action: Update Grafana to the latest version to mitigate these vulnerabilities.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-07-16
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0224

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-217200.62% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 46% of all scored CVEs.
Low exploitation riskCVE-2026-217210.65% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 47% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-21720	coverage & exploitation status	NVD · CVE.org
CVE-2026-21721	coverage & exploitation status	NVD · CVE.org

Recent advisories for Grafana

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

criticalCVE-2026-67342: ArcadeDB versions before 26.7.2 contain an authorization bypass vulnerability in HTTP handlers…nvd · 2026-08-01
medium[UPDATE] [medium] Grafana: Vulnerability allows privilege escalationcert-bund · 2026-07-31
medium[UPDATE] [medium] Grafana: Multiple vulnerabilitiescert-bund · 2026-07-29
medium[NEW] [medium] Grafana: Vulnerability allows denial of servicecert-bund · 2026-07-23
high[NEW] [high] Grafana: Vulnerability allows file manipulationcert-bund · 2026-07-20
high[UPDATE] [high] Grafana: Multiple vulnerabilitiescert-bund · 2026-07-20