How severe is CVE-2026-27880?

CVE-2026-27880 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2026-27880 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27880?

CVE-2026-27880 affects Grafana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27880?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-27880 have an EU (EUVD) identifier?

Yes. CVE-2026-27880 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16598.

When was CVE-2026-27880 published?

CVE-2026-27880 was published on 2026-03-27 and last updated on 2026-06-30.

CVE-2026-27880

CVE-2026-27880 is a high-severity vulnerability in Grafana with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16598
Weakness: CWE-787
Affected product: Grafana
Published: 2026-03-27
Last modified: 2026-06-30

Description

The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.

Frequently asked questions

What is CVE-2026-27880?: The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.
How severe is CVE-2026-27880?: CVE-2026-27880 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2026-27880 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27880?: CVE-2026-27880 affects Grafana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27880?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-27880 have an EU (EUVD) identifier?: Yes. CVE-2026-27880 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16598.
When was CVE-2026-27880 published?: CVE-2026-27880 was published on 2026-03-27 and last updated on 2026-06-30.

References

Affected products (1)

cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

196.188.187.85 (ipv4-addr)
14.22.23.243 (ipv4-addr)
139.99.217.78 (ipv4-addr)