Is CVE-2026-50567 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-50567 being exploited in the wild.

How severe is CVE-2026-50567?

High severity, with a CVSS score of 7.7, published 10 June 2026.

Which products and versions are affected?

Fission <= 1.24.0; github.com/fission/fission (Go) <= 1.24.0, SEMVER:introduced=0,fixed=1.25.0.

Is there a fix for CVE-2026-50567?

Yes. github.com/fission/fission (Go): upgrade to 1.25.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-50567 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-50567?

Check whether you run Fission or github.com/fission/fission (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-50567: Fission path traversal in zip extraction utility

Q: Which products and versions are affected?

Fission <= 1.24.0; github.com/fission/fission (Go) <= 1.24.0, SEMVER:introduced=0,fixed=1.25.0.

Q: Is there a fix for CVE-2026-50567?

Yes. github.com/fission/fission (Go): upgrade to 1.25.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-50567 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-50567?

Check whether you run Fission or github.com/fission/fission (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-50567 · Severity: high · CVSS 7.7 · Published 2026-06-10

Fission is a serverless framework for Kubernetes. A vulnerability in its archive extraction utility allows an attacker to write malicious files outside of the intended directory by providing a specially crafted ZIP file. This could lead to the overwriting of sensitive system files, configuration secrets, or the application's own binary, potentially compromising the entire environment or other users' data.

Technologies: Fission, github.com/fission/fission (Go). Vendors: Fission, Go.

Quick answers

Is CVE-2026-50567 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-50567 being exploited in the wild.
How severe is CVE-2026-50567?: High severity, with a CVSS score of 7.7, published 10 June 2026.
Which products and versions are affected?: Fission <= 1.24.0; github.com/fission/fission (Go) <= 1.24.0, SEMVER:introduced=0,fixed=1.25.0.
Is there a fix for CVE-2026-50567?: Yes. github.com/fission/fission (Go): upgrade to 1.25.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-50567 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-50567?: Check whether you run Fission or github.com/fission/fission (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

github.com/fission/fission (Go): upgrade to 1.25.0 or later
```
go get github.com/fission/fission@v1.25.0
```

Technical details

A path traversal vulnerability, commonly known as 'Zip Slip', exists in the `Unarchive` function within `pkg/utils/zip.go`. The component uses `filepath.Join` to combine archive entry names with the destination directory without verifying if the resulting path remains within the target boundaries. An attacker who can control a `Package.Spec.Source.URL` or `Deployment.URL` can provide a ZIP archive containing entries with `../` sequences. This allows the `fission-fetcher` sidecar to write files to arbitrary locations accessible to the process, including mounted secret volumes or other tenant directories. The issue is fixed in version 1.25.0 by implementing `os.Root` for directory confinement and validating entry names against traversal sequences and symlinks.

Affected products

fission fission <= 1.24.0

Identifiers

CVE-2026-50567
GHSA-q6vm-xqc9-v3ff
GO-2026-6127

Timeline

2026-06-08: disclosed
2026-06-10: advisory: NVD publication
2026-07-28: patched: GitHub Advisory updated/published

References

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