CVE-20XX-?
agent?

CVE-2026-56743

5.4 MEDIUM 0.2% exploit odds Fix listed Auth & access Library

What it is

Cilium is a networking, observability, and security solution. From 1.19.0 to 1.19.4, standard Kubernetes NetworkPolicy specifications using CIDR-based ipBlock rules without pod or namespace selectors erroneously generate a wildcard namespace allow rule when Cilium is configured with a custom clusterName rather than the default any value. The parser incorrectly instantiates a pod selector on selectorless peer definitions, allowing traffic from other workloads in the same namespace as the subject of the policy. This issue is fixed in version 1.19.5.

At a glance

Exploitability
Can be exploited from the same network segment with a low-privilege account. Limited direct impact.
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-863 · Incorrect authorization
Record status
Analyzed

Affected

Attack profile CVSS 3.1 · 5.4

Attack vector
Adjacent network
Complexity
Low
Privileges needed
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Raw vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:L/I:L/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-2026-56743.md and follow it. Check whether this project is affected by CVE-2026-56743. 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