CVE-2022-36049: Flux2 Helm Controller denial of service
Vulnerability summary
CVE-2022-36049 is a high (CVSS 7.7) Uncontrolled Resource Consumption vulnerability in fluxcd flux2. EPSS estimates a 1.54% chance of exploitation in the next 30 days, higher than 74.9% of scored vulnerabilities.
Not severe (CVSS 7.7, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 07-09-2022PublishedVulnerability first disclosed.
- 23-04-2025Last modifiedVulnerability information updated.
Description
Flux2 is a tool for keeping Kubernetes clusters in sync with sources of configuration, and Flux's helm-controller is a Kubernetes operator that allows one to declaratively manage Helm chart releases. Helm controller is tightly integrated with the Helm SDK. A vulnerability found in the Helm SDK that affects flux2 v0.0.17 until v0.32.0 and helm-controller v0.0.4 until v0.23.0 allows for specific data inputs to cause high memory consumption. In some platforms, this could cause the controller to panic and stop processing reconciliations. In a shared cluster multi-tenancy environment, a tenant could create a HelmRelease that makes the controller panic, denying all other tenants from their Helm releases being reconciled. Patches are available in flux2 v0.32.0 and helm-controller v0.23.0.
CVSS metrics
3 scores · 3 sources · 1 version- OSV · GoEcosystem advisory · calculated7.7HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
1.54%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
Increase +0.10 pp
From 1.45% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
Affected systems
Known conditions: network-reachable, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Fluxcd2 products
- flux2≥ 0.0.4, < 0.23.0 | ≥ 0.0.17, < 0.32.0
- helm-controller≥ 0.0.4, < 0.23.0
Github.com/fluxcd2 products
- flux2≥ 0.0.17, < 0.32.0
- helm-controller≥ 0.0.4, < 0.23.0
Helm1 product
- helm≥ 3.0.0, < 3.9.4
3 vendors · 5 products
References
6 links- github.com/fluxcd/flux2/security/advisories/GHSA-p2g7-xwvr-rrw3X Refsource CONFIRMWEBThird Party Advisory
- bugs.chromium.org/p/oss-fuzz/issues/detail?id=44996X Refsource MISCWEBMailing ListThird Party Advisory
- bugs.chromium.org/p/oss-fuzz/issues/detail?id=48360X Refsource MISCWEBMailing ListThird Party Advisory
- github.com/fluxcd/flux2PACKAGE