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Fencer Vulns
medium 6.5

CVE-2026-27879 json

Query resampling can cause unbounded memory allocations

published 2026-03-27 7 mo ago modified 2026-09-08 2 mo ago also BIT-grafana-2026-27879 , EUVD-2026-16636

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 33%
public exploits
0
none known

Summary

A resample query can be used to trigger out-of-memory crashes in Grafana.

Patch / fix

  • bitnami grafana 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2
  • Grafana Grafana 11.6.14, 12.1.10, 12.2.8, 12.3.6, 12.4.2
  • grafana Multi Linux Manager Tools SLE-15 11.6.14+security01-150002.4.14.1
  • spacecmd Multi Linux Manager Tools SLE-15 5.1.13-150002.3.9.3
  • uyuni-tools Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 5.1.26-150002.3.12.1
  • prometheus-blackbox_exporter Multi Linux Manager Tools SLE-Micro-5, Multi Linux Manager Tools SLE-15 0.26.0-150002.3.6.1
  • golang-github-prometheus-prometheus Multi Linux Manager Tools SLE-15 3.5.0-150002.3.8.1
  • golang-github-lusitaniae-apache_exporter Multi Linux Manager Tools SLE-15 1.0.10-150002.3.6.1

suse advisories SUSE-SU-2026:1524-1

  • grafana openSUSE Leap 16.0 11.6.14+security04-bp160.1.1
  • grafana openSUSE Tumbleweed 11.6.14+security01-1.1

opensuse advisories openSUSE-SU-2026:20940-1openSUSE-SU-2026:10601-1

  • grafana Alpine 3.23 12.2.8-r0
  • grafana Alpine 3.24 12.4.3-r0

alpine advisories ALPINE-CVE-2026-27879

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-27879 updated cvss 6.5

Grafana: Grafana: Denial of Service via resample query

  • Red Hat Enterprise Linux 8 grafana, grafana-loki, grafana-mssql, grafana-mysql, grafana-selinux, grafana-graphite, +8 more Red Hat Enterprise Linux 9 grafana, grafana-selinux Red Hat Enterprise Linux 10 grafana
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

0.39% chance of exploitation in the next 30 days, higher than 33% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
bitnami grafana
>=8.0.0, <11.6.14
>=12.0.0, <12.1.10
>=12.2.0, <12.2.8
>=12.3.0, <12.3.6
>=12.4.0, <12.4.2
11.6.14
12.1.10
12.2.8
12.3.6
12.4.2

Affected products

  • Grafana Grafana

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
  • CWE-787 Out-of-bounds Write

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: NVD has incorrect affected ranges. They incorrectly interpreted the fixed ranges as affected ranges.