7.5

CVE-2026-42127: Pre-authentication denial of service in the public dashboard query endpoint

Modified
AliasesRHSA-2026:54184UBUNTU-CVE-2026-42127CGA-7cm6-vgpj-jw7q
Published 22-06-2026Last modified 27-08-2026

Vulnerability summary

CVE-2026-42127 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in grafana. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 37.5% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 0% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.43%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 5
OPENSUSE-SU-2026:11332-1OPENSUSE-SU-2026:22125-1RHSA-2026:47618RHSA-2026:47619RHSA-2026:54178RHSA-2026:54243

Timeline

  1. 22-06-2026
    PublishedVulnerability first disclosed.
  2. 27-08-2026
    Last modifiedVulnerability information updated.

Description

The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.

CVSS metrics

8 scores · 8 sources · 1 version

EPSS trend

Probability

0.43%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.43% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard11 products
  • grafana-11.6< 11.6.16-r2
  • grafana-12.0All versions (No fix recorded)
  • grafana-12.1All versions (No fix recorded)
  • grafana-12.2< 12.2.10-r10
  • grafana-12.3< 12.3.7-r0
Redhat4 products
  • grafana< 0:10.2.6-23.el9_8.1
  • grafana-debuginfo< 0:10.2.6-23.el9_8.1
  • grafana-debugsource< 0:10.2.6-23.el9_8.1
  • grafana-selinux< 0:10.2.6-23.el9_8.1
Grafana3 products
  • grafana≤ 11.6.14 | ≥ 12.2.0, ≤ 12.2.8 | ≥ 12.3.0, ≤ 12.3.6 | ≥ 12.4.0, ≤ 12.4.3 | ≥ 13.0.0, ≤ 13.0.1
  • grafana enterprise≥ 11.6.0, ≤ 11.6.14 | ≥ 12.2.0, ≤ 12.2.8 | ≥ 12.3.0, ≤ 12.3.6 | ≥ 12.4.0, ≤ 12.4.3 | ≥ 13.0.0, ≤ 13.0.1
  • grafana oss≥ 11.6.0, ≤ 11.6.14 | ≥ 12.2.0, ≤ 12.2.8 | ≥ 12.3.0, ≤ 12.3.6 | ≥ 12.4.0, ≤ 12.4.3 | ≥ 13.0.0, ≤ 13.0.1
Wolfi2 products
  • grafana-12.3< 12.3.7-r0
  • grafana-12.4< 12.4.4-r0
Alpine1 product
  • grafana≥ 12.2.0, < 12.4.4-r0
Github.com/grafana1 product
  • grafana≥ 2.0.0-beta1 (No fix recorded) | ≥ 12.0.0 (No fix recorded) | ≥ 12.3.0 (No fix recorded) | ≥ 12.4.0 (No fix recorded) | ≥ 13.0.0 (No fix recorded) | < 1.9.2-0.20260616075434-82ef13993059 | All versions (No fix recorded) | ≥ 2.0.0-beta1+incompatible (No fix recorded)
Ubuntu1 product
  • grafanaAll versions (No fix recorded)

7 vendors · 23 products

References

20 links
Show all 20 references