CVE-2026-50565Disclosure

LOWCVSS 4.9 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, Fission builder pods were created with ServiceAccountName: fission-builder and no AutomountServiceAccountToken: false, so the kubelet auto-mounted the service-account token into every container in the pod — including the user-supplied builder image. This issue has been patched in version 1.24.0.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-250CWE-269CWE-538

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://vulnerability.circl.lu/vuln/cve-2026-50565

Full discourse1 post

nivelepsilon@FpeSre92d
Disclosure
Fission promises to run your functions in tidy isolated containers. A CVSS 9.9 bug just let a tenant escape that container and grab the whole node. Serverless, now with bonus server access. 🚪 #Kubernetes #CVE https://vulnerability.circl.lu/vuln/cve-2026-50565
Post summary
The post announces a high‑severity container escape vulnerability in Fission that allows tenant code to escape to the host; it does not provide a PoC, exploit code, or patch.
0000044
52 followersView on X

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