Description
Apptainer is an open source container platform. Prior to version 1.5.1, Image.AuthorizedPath applies plain string-prefix matching to the limit container paths directive in apptainer.conf, so an allowed path such as /data/safe also authorizes a sibling path such as /data/safe-but-unsafe. A local user can consequently run a container from a directory outside the administrator's intended allowlist when Apptainer operates in setuid mode. Installations that do not use setuid mode or do not configure limit container paths are not affected, and unrestricted user namespaces already allow users to run containers of their choice. This issue is fixed in version 1.5.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| apptainer | apptainer | < 1.5.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | apptainer | No fix yet | — |
| Ubuntu 26.04 LTS | apptainer | No fix yet | — |
| Ubuntu 25.10 | apptainer | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | apptainer | 1.5.1-150600.4.24.1 | SUSE-SU-2026:2609-1 |
| SLES 15 SP6 | apptainer | 1.5.1-150600.4.24.1 | SUSE-SU-2026:2609-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | apptainer | 1.5.1-1.1 | openSUSE-SU-2026:10993-1 |
| openSUSE Leap 16.0 | apptainer | 1.5.1-bp160.1.1 | openSUSE-SU-2026:20942-1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | apptainer | 1.5.1-r0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/apptainer/apptainer | < 1.5.1 | 1.5.1 | GHSA-cr2j-534f-mf3g |
Advisories 4
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- SUSE-SU-2026:2609-1 Security update for apptainer SUSE / openSUSE Security Updates · Jun 25, 2026
- openSUSE-SU-2026:20942-1 Security update for apptainer SUSE / openSUSE Security Updates · Jun 13, 2026
- openSUSE-SU-2026:10993-1 apptainer-1.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Jun 12, 2026