CVE catalog
CVE-2026-56857
On Windows, when the target of Root.Mkdir or Root.MkdirAll is a junction pointing to an empty location, the operation can create a directory at the junction target even when that target is located out
- Severity
- Critical · CVSS 9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.55% · Oct 25, 2026
On Windows, when the target of Root.Mkdir or Root.MkdirAll is a junction pointing to an empty location, the operation can create a directory at the junction target even when that target is located outside the root. This only applies to operations where the last path component is a junction (path/to/junction, but not path/junction/target).
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | golang-1.19 | bookworm | 1.19.8-2 | not affected |
| Bitnami | golang | Not reported | 1.26.9 | fixed |
| Bitnami | golang | Not reported | 1.27.2 | fixed |
| Go | stdlib | Not reported | 1.26.9 | fixed |
| Go | stdlib | Not reported | 1.27.2 | fixed |
| Suse | go1.26 | linux enterprise server 16.0 | 1.26.9-160000.1.1 | fixed |
| Suse | go1.26 | linux enterprise server for sap applications 16.0 | 1.26.9-160000.1.1 | fixed |
| Suse | go1.27 | linux enterprise server 16.0 | 1.27.2-160000.1.1 | fixed |
| Suse | go1.27 | linux enterprise server for sap applications 16.0 | 1.27.2-160000.1.1 | fixed |
| Opensuse | go1.27 | leap 16.0 | 1.27.2-160000.1.1 | fixed |
| Opensuse | go1.26 | leap 16.0 | 1.26.9-160000.1.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | golang-1.19 | source | bookworm | Not affected | unimportant | Not reported | Not reported |
| Bitnami | golang | Bitnami | Not reported | 1.26.9 | Not reported | BIT-GOLANG-2026-56857 | Not reported |
| Bitnami | golang | Bitnami | Not reported | 1.27.2 | Not reported | BIT-GOLANG-2026-56857 | Not reported |
| Go | stdlib | Go | Not reported | 1.26.9 | Not reported | GO-2026-6604 | Not reported |
| Go | stdlib | Go | Not reported | 1.27.2 | Not reported | GO-2026-6604 | Not reported |
| Suse | go1.26 | rpm | linux enterprise server 16.0 | 1.26.9-160000.1.1 | Not reported | SUSE-SU-2026:24239-1 | Not reported |
| Suse | go1.26 | rpm | linux enterprise server for sap applications 16.0 | 1.26.9-160000.1.1 | Not reported | SUSE-SU-2026:24239-1 | Not reported |
| Suse | go1.27 | rpm | linux enterprise server 16.0 | 1.27.2-160000.1.1 | Not reported | SUSE-SU-2026:24237-1 | Not reported |
| Suse | go1.27 | rpm | linux enterprise server for sap applications 16.0 | 1.27.2-160000.1.1 | Not reported | SUSE-SU-2026:24237-1 | Not reported |
| Opensuse | go1.27 | rpm | leap 16.0 | 1.27.2-160000.1.1 | Not reported | OPENSUSE-SU-2026:22093-1 | Not reported |
| Opensuse | go1.26 | rpm | leap 16.0 | 1.26.9-160000.1.1 | Not reported | OPENSUSE-SU-2026:22095-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [golang-1.19]Not affected
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-doc]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-go]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· amd64 · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· arm64 · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
- [golang-1.19-src]Not affected
Source package: [golang-1.19]
Details (2)
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
1.19.8-2· all · bookwormNot affected
nvd · golang-1.19 · debian · bookworm
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_12093-1.json]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-56857]
- [https://osv.dev/vulnerability/GO-2026-6604]
- [https://osv.dev/vulnerability/SUSE-SU-2026:24237-1]
- [https://osv.dev/vulnerability/SUSE-SU-2026:24239-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:22093-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:22095-1]
- [https://security-tracker.debian.org/tracker/CVE-2026-56857]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56857.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3841.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]