5

CVE-2022-39272: Flux2 vulnerable to Denial of Service due to Improper use of metav1.Duration

Modified
AliasesCGA-p29c-6828-jhhwCGA-pr4w-jh9q-2j23GHSA-f4p5-x4vc-mh4v
Published 21-10-2022Last modified 23-04-2025

Vulnerability summary

CVE-2022-39272 is a medium (CVSS 5.0) vulnerability in fluxcd flux2. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 55.6% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 5, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
5.0/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.77%
0%100%
Low · +0.09 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 0 · Related 2
CGA-GVFG-4MJF-PF84CGA-HWG5-22J5-JJQ4

Timeline

  1. 21-10-2022
    PublishedVulnerability first disclosed.
  2. 23-04-2025
    Last modifiedVulnerability information updated.

Description

Flux is an open and extensible continuous delivery solution for Kubernetes. Versions prior to 0.35.0 are subject to a Denial of Service. Users that have permissions to change Flux’s objects, either through a Flux source or directly within a cluster, can provide invalid data to fields `.spec.interval` or `.spec.timeout` (and structured variations of these fields), causing the entire object type to stop being processed. This issue is patched in version 0.35.0. As a workaround, Admission controllers can be employed to restrict the values that can be used for fields `.spec.interval` and `.spec.timeout`, however upgrading to the latest versions is still the recommended mitigation.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.77%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

Increase +0.09 pp

From 0.68% 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, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Fluxcd7 products
Github.com/fluxcd7 products
  • flux2≥ 0.1.0, < 0.35.0
  • helm-controller≥ 0.0.1-alpha-1, < 0.24.0
  • image-automation-controller≥ 0.1.0, < 0.26.0
  • image-reflector-controller≥ 0.1.0, < 0.22.0
  • kustomize-controller≥ 0.0.1-alpha-1, < 0.29.0
Alpine1 product
  • flux< 0.36.0-r0
Chainguard1 product
  • kubevela< 1.9.9-r0
Github.com/fluxcd/helm-controller1 product
  • api< 0.26.0
Github.com/fluxcd/image-automation-controller1 product
  • api< 0.26.1
Github.com/fluxcd/image-reflector-controller1 product
  • api< 0.22.1
Github.com/fluxcd/kustomize-controller1 product
  • api< 0.30.0
Github.com/fluxcd/notification-controller1 product
  • api< 0.28.0
Github.com/fluxcd/source-controller1 product
  • api< 0.30.0
Wolfi1 product
  • kubevela< 1.9.9-r0

11 vendors · 23 products

References

15 links
Show all 15 references