CVE-20XX-?
agent?

CVE-2026-106563

5.3 MEDIUM 0.2% exploit odds Fix listed Other Web app

What it is

Backstage is an open framework for building developer portals. Prior to 0.21.8, the @backstage/plugin-kubernetes-backend package is affected by improper entity validation in deprecated kubernetes services endpoint. An authenticated user with Kubernetes read permissions could access Kubernetes workload data beyond their intended scope by supplying crafted entity data to the deprecated services endpoint. The exposure is limited to read-only access to Kubernetes object metadata across configured clusters. This issue is fixed in version 0.21.8.

At a glance

Exploitability
Can be exploited over the network with a low-privilege account. High risk of data exposure.
Exploit odds
0.2% chance of exploitation in the next 30 days (EPSS).
Fix
A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

  1. PublishedDisclosed publicly on CVE.org and NVD
  2. Last updatedMost recent change to the record

Why it ranks here

Details

Published
Last modified
Exploit probability
0.2% · EPSS, next 30 days
Weakness
CWE-20 · Improper input validation
Record status
Analyzed

Affected

Attack profile CVSS 3.1 · 5.3

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Raw vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2026-106563.md and follow it. Check whether this project is affected by CVE-2026-106563. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record