CVE-2021-4178: redhat a-mq_streams Deserialization of Untrusted Data
Vulnerability summary
CVE-2021-4178 is a medium (CVSS 6.7) Deserialization of Untrusted Data vulnerability in redhat a-mq_streams. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 27% of scored vulnerabilities.
Not severe (CVSS 6.7, local access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 1Timeline
- 24-08-2022PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
CVSS metrics
2 scores · 2 sources · 1 version- OSV · MavenEcosystem advisory · calculated6.7MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
0.34%
Chance of exploitation in the next 30 days
Percentile
27%
Versus all other CVEs
30-day change
No change 0.00 pp
From 0.33% on 05-10-2026
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 causeAffected systems
Known conditions: local access, administrative account, no user interaction (CVSS vector). Other conditions: not stated in public data.
Redhat9 products
- a-mq_streams2.0.1
- build_of_quarkus2.2.5
- descision_manager7.0
- fabric8-kubernetes≥ 5.0.1, < 5.0.3 | ≥ 5.1.0, < 5.1.2 | ≥ 5.2.0, < 5.3.2 | ≥ 5.5.0, < 5.7.4 | ≥ 5.9.0, < 5.10.2 | ≥ 5.11.0, < 5.11.2 | 5.0.0:beta1 | 5.8.0
- fuse7.11
Io.fabric81 product
- kubernetes-client≥ 5.0.0-beta-1, < 5.0.3 | ≥ 5.1.0, < 5.1.2 | ≥ 5.2.0, < 5.3.2 | ≥ 5.5.0, < 5.7.4 | ≥ 5.8.0, < 5.8.1 | ≥ 5.9.0, < 5.10.2 | ≥ 5.11.0, < 5.11.2
2 vendors · 10 products
References
9 links- github.com/fabric8io/kubernetes-client/issues/3653X Refsource MISCWEBIssue TrackingThird Party Advisory
