# CVE-2026-88264: crun terminal setup path redirection vulnerability

Source: https://junglewise.ai/threats/cve-2026-88264-crun-terminal-setup-path-redirection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-10. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-88264 · Severity: medium · CVSS 5.6 · Published 2026-09-10

crun is a lightweight container runtime used to execute containerized applications. A vulnerability in crun's terminal setup allows attackers to redirect /dev/console to attacker-controlled paths when container configurations do not mount /dev separately, potentially compromising container isolation and allowing unauthorized file access.

Technologies: [Containers Crun](https://junglewise.ai/threats/technologies/crun). Vendors: [Containers](https://junglewise.ai/threats/vendors/containers).

## Quick answers

**Is CVE-2026-88264 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88264 being exploited in the wild.

**How severe is CVE-2026-88264?** Medium severity, with a CVSS score of 5.6, published 10 September 2026.

**Which products and versions are affected?** Containers Crun 1.29.1 and earlier.

**Is there a fix for CVE-2026-88264?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-88264 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-88264?** Check whether you run Containers Crun 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.

## Technical details

The vulnerability is a path redirection flaw in crun's terminal setup logic. When a container configuration does not provide a dedicated mount for /dev, an attacker can redirect /dev/console to an attacker-controlled path, including via the read-only-rootfs bind-mount fallback mechanism. The attack requires a non-default container configuration; containers using default configurations with fresh /dev mounts are not affected. The vulnerability affects crun versions 1.29.1 and earlier, and no patched release is currently available.

## Affected products

- containers crun 1.29.1 and earlier

## Timeline

- 2026-09-10: disclosed

## References

- [https://github.com/containers/crun](https://github.com/containers/crun)
- [https://catalog.redhat.com/software/containers/](https://catalog.redhat.com/software/containers/)

## Related threats

- [crun symlink following in /dev/null leads to host file access](https://junglewise.ai/threats/cve-2026-88265-crun-symlink-following-in-dev-null-leads-to-host-file-access)
- [crun privilege escalation in libkrun with passt networking](https://junglewise.ai/threats/cve-2026-84042-crun-privilege-escalation-in-libkrun-with-passt-networking)