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CVE-2026-33374

Unbounded memory allocation in the Prometheus rule conversion API

CVSS score

6.5

EPSS probability

—

Risk score

0.7

Published

6 h ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

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Impact on My Inventory

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-33374: Unbounded Memory Allocation in Grafana Prometheus Rule Conversion API

Sources read

1

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

The Prometheus rule conversion API endpoints in Grafana Enterprise and Grafana OSS do not limit request body size. This allows authenticated users to trigger unbounded memory allocations, causing the server to crash through out-of-memory conditions.

Why does it matter?

This vulnerability allows authenticated users to trigger a denial of service on the server. The patch status remains unknown, and vendor advisories should be monitored.

What should be done?

  • Follow official vendor advisories
  • Apply relevant Grafana updates
Chain of evidence and sources3 verified claims

Grafana Prometheus kural dönüştürme API uç noktaları istek gövdesi boyutunu sınırlandırmamaktadır.

S0 · daybreach-canonicalS1 · cvelist

Kimliği doğrulanmış kullanıcılar bellek yetersizliği durumları yaratarak sunucuyu çökletebilir.

S0 · daybreach-canonicalS1 · cvelist

Yama durumu resmî kaynaklarda doğrulanamamıştır.

S0 · daybreach-canonical
Show the technical text from the sources

The Prometheus rule conversion API endpoints in Grafana do not limit request body size, allowing authenticated users to trigger unbounded memory allocations that can crash the server through out-of-memory conditions.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE: CWE-770, CWE-400, CWE-789

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-33374 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1grafanaGrafana Enterprise View
2grafanaGrafana OSS View
Total affected vendors: 1|Products: 2

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.5CVSS V3_1MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE CNA
6.5CVSS V31MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-33374 is associated with the following CWEs:

CWE-770: Allocation of Resources Without Limits or ThrottlingCWE-400: Common Weakness Enumeration Entry CWE-400CWE-789: Common Weakness Enumeration Entry CWE-789

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-33374 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

https://grafana.com/security/security-advisories/cve-2026-33374vendor-advisory

CVSS Vector Radar Chart

6.5 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityHigh

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)High

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

G
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grafana

Weakness Type (CWE & CAPEC)

CWE-770 CWE-400 CWE-789

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