Vulnerability · CVE-2026-33374
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 serv
Published Oct 13, 2026 · catalog updated Nov 4, 2026 · The Prometheus rule conversion
Last checked Nov 5, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-33374. EPSS is 0.37%. Act only if a listed version of The Prometheus rule conversion is installed.
Gaps on this record
- The stored product name is a package slug. The name on this page is taken from the title (The Prometheus rule conversion).
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
- Severity
- Medium6.5
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.37%
- Remediation
- Advisory link
- Affected products
- Alpine:v3.24 grafana
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- Alpine:v3.24 grafana0 → 12.4.14-r0
How to fix CVE-2026-33374
Upgrade
CVE-2026-33374 lists a fix boundary at 12.4.14-r0. Compare the installed build with that boundary before you change production.
Version check
Fixed in 12.4.14-r0
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-33374. EPSS is 0.37%. Act only if a listed version of The Prometheus rule conversion is installed.
Which versions are affected?
Compare what you have installed with 0 → 12.4.14-r0. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
No weakness class is stored. EPSS 0.37%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Technology hubs
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Oct 13, 2026 · Trivy Vulnerability DB
Detected
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.
Nov 4, 2026 · Trivy Vulnerability DB
Fix available
grafana fixed in 12.4.14-r0
Nov 4, 2026 · Trivy Vulnerability DB
Fix available
grafana fixed in 12.4.14-r0
Nov 4, 2026 · Trivy Vulnerability DB
Updated
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.
Sources
- CVE.orgVulnerability recordCVE-2026-33374
Official CVE identifier
cve.org - Trivy Vulnerability DBPackage advisoryALPINE-CVE-2026-33374
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.
osv.dev
References
Freshness
Last verified in this catalog Nov 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- CVE.orgNov 5, 2026
- Trivy Vulnerability DBNov 5, 2026