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01 Record

CVE-2026-81938

Arbitrary file read via Alertmanager receiver configuration in Grafana Mimir

HighPUBLISHEDCNA: GRAFANA
CNA base score7.7 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

02 Description

Arbitrary file read via Alertmanager receiver configuration in Grafana Mimir

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
Not scored by EPSS
EPSS percentile
Not scored by EPSS
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Not recorded
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-11-02 18:23Z1 HR AGO
Last updated
2026-11-02 19:06Z1 HR AGO
Reserved
2026-08-27
Assigning CNA
GRAFANA
Record state
PUBLISHED
Severity
High (CVSS 7.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted DirectoryBase
Data version
5.2
Document digest
a2c0cae5440ed511410c3fb294b2f11a820d1c053d0403b9ca435a2bfa7ba03c

05 Affected products

VendorProductVersionsPlatforms
GrafanaEnterprise Metrics (GEM)2.11.0 to 2.16.2, 2.17.0 to < 2.17.20—
GrafanaGrafana Mimir3.0.4 to < 3.1.7, 3.2.0 to < 3.2.2—

06 References