Loading...
Skip to main content

CVE-2026-32769 — Vulnerability in github.com/ctfer-io/fullchain —...

HIGH

Fullchain's Invalid NetworkPolicy enables a malicious actor to pivot into another namespace

Published March 16, 2026Updated May 5, 2026Source: osv

Summary

### Impact Due to a mis-written NetworkPolicy, a malicious actor can pivot from a subverted application to any Pod out of the origin namespace. This breaks the security-by-default property expected as part of the deployment program, leading to a potential lateral movement. ### Patch Removing the `inter-ns` NetworkPolicy patches the vulnerability. If updates are not possible in production environments, we recommend to manually delete it and update as soon as possible. ### Workaround Given your context, delete the failing network policy that should be prefixed by `inter-ns-` in the target namespace. You can use the following to delete all matching network policy. If unsure of the outcome, please do it manually. ```bash for ns in $(kubectl get ns -o jsonpath='{.items[*].metadata.name}' | tr ' ' '\n' | grep '^ns-'); do kubectl -n "$ns" get networkpolicy -o name \ | grep '^networkpolicy.networking.k8s.io/inter-ns-' \ | xargs -r kubectl -n "$ns" delete done ```

Advisory Timeline

  • First published March 16, 2026 (210 days ago).
  • Last revised May 5, 2026 — 50 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Go
Update github.com/ctfer-io/fullchain to 0.1.1 or later
go get github.com/ctfer-io/fullchain@v0.1.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: go (1).

PackageEcosystemAffectedFixed In
github.com/ctfer-io/fullchain
go
All versions0.1.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Frequently Asked Questions

What is CVE-2026-32769?
Fullchain's Invalid NetworkPolicy enables a malicious actor to pivot into another namespace This vulnerability has been assigned a severity rating of HIGH (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2026-32769?
CVE-2026-32769 affects github.com/ctfer-io/fullchain. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-32769 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-hxm7-9q36-c77f
GO-2026-4715

Related CVEs

  • CVE-2026-107809
    HIGH

    Nginx-UI AuthRequired token cookie fallback enables CSRF against management APIs

  • CVE-2025-53632
    HIGH

    Chall-Manager is vulnerable to Path Traversal when extracting/decoding a zip archive

  • CVE-2026-32720
    HIGH

    github.com/ctfer-io/monitoring Vulnerable to Improper Access Control

  • CVE-2026-32771
    HIGH

    Monitoring is vulnerable to Archive Slip due to missing checks in sanitization

  • CVE-2026-32737
    HIGH

    Romeo's invalid NetworkPolicy enables a malicious actor to pivot into another namespace

  • CVE-2026-107813
    HIGH

    Nginx UI: Incomplete fix of CVE-2026-84315 - the api/cluster router was not - wrapped in RequireSecureSession, so those sensitive mutations run without OTP step-up

  • CVE-2026-32768
    HIGH

    Chall-Manager's invalid NetworkPolicy enables a malicious actor to pivot into another namespace

  • CVE-2026-32805
    HIGH

    Romeo is vulnerable to Archive Slip due to missing checks in sanitization

Check if you're affected

Scan your dependencies to see if this vulnerability affects your projects.

Scan Your Dependencies