CVE-2026-56857
CVE-2026-56857 · Root.Mkdir(All) can follow junctions out of the root on Windows in os
This page contains facts from public vulnerability sources. Check the original advisory before updating.
This page shows selected source facts. See the linked advisories for the complete description and affected versions.
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).
CVSS 9.8 · Critical · EPSS 0.6% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
os
- Versions
- ≥ 0, < 1.26.9: Affected (semver)
- ≥ 1.27.0-0, < 1.27.2: Affected (semver)
Update to 1.26.9; Update to 1.27.2
internal/syscall/windows
- Versions
- ≥ 0, < 1.26.9: Affected (semver)
- ≥ 1.27.0-0, < 1.27.2: Affected (semver)
Update to 1.26.9; Update to 1.27.2
golang-1.10 Ubuntu:14.04:LTS
- Versions
- 1.10.4-2ubuntu1~14.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.10 Ubuntu:16.04:LTS
- Versions
- 1.10.4-2ubuntu1~16.04.1
- 1.10.4-2ubuntu1~16.04.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.6 Ubuntu:16.04:LTS
- Versions
- 1.6-0ubuntu1
- 1.6-0ubuntu2
- 1.6-0ubuntu3
- 1.6-0ubuntu4
- 1.6-0ubuntu5
- 1.6.1-0ubuntu1
- 1.6.2-0ubuntu5~16.04
- 1.6.2-0ubuntu5~16.04.2
- 1.6.2-0ubuntu5~16.04.3
- 1.6.2-0ubuntu5~16.04.4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.13 Ubuntu:Pro:16.04:LTS
- Versions
- 1.13.8-1ubuntu1~16.04.2
- 1.13.8-1ubuntu1~16.04.3
- 1.13.8-1ubuntu1~16.04.3+esm2
- 1.13.8-1ubuntu1~16.04.3+esm3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.18 Ubuntu:Pro:16.04:LTS
- Versions
- 1.18.1-1ubuntu1~16.04.6
- 1.18.1-1ubuntu1~16.04.6+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.10 Ubuntu:18.04:LTS
- Versions
- 1.10~rc1-1
- 1.10~rc1-1ubuntu1
- 1.10~rc1-2ubuntu1
- 1.10~rc2-1ubuntu1
- 1.10-1ubuntu1
- 1.10.1-1ubuntu2
- 1.10.4-2ubuntu1~18.04.1
- 1.10.4-2ubuntu1~18.04.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.13 Ubuntu:Pro:18.04:LTS
- Versions
- 1.13.8-1ubuntu1~18.04.2
- 1.13.8-1ubuntu1~18.04.3
- 1.13.8-1ubuntu1~18.04.4
- 1.13.8-1ubuntu1~18.04.4+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.16 Ubuntu:Pro:18.04:LTS
- Versions
- 1.16.2-0ubuntu1~18.04.2
- 1.16.2-0ubuntu1~18.04.2+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.18 Ubuntu:Pro:18.04:LTS
- Versions
- 1.18.1-1ubuntu1~18.04.3
- 1.18.1-1ubuntu1~18.04.4
- 1.18.1-1ubuntu1~18.04.4+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.8 Ubuntu:18.04:LTS
- Versions
- 1.8.3-2ubuntu1
- 1.8.3-2ubuntu1.18.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.9 Ubuntu:18.04:LTS
- Versions
- 1.9.1-2ubuntu1
- 1.9.2-1ubuntu1
- 1.9.2-3ubuntu1
- 1.9.3-1ubuntu1
- 1.9.4-1ubuntu1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.13 Ubuntu:20.04:LTS
- Versions
- 1.13.1-1ubuntu1
- 1.13.3-1ubuntu1
- 1.13.4-1ubuntu1
- 1.13.5-1ubuntu1
- 1.13.6-1ubuntu1
- 1.13.6-2ubuntu1
- 1.13.7-1ubuntu1
- 1.13.8-1ubuntu1
- 1.13.8-1ubuntu1.1
- 1.13.8-1ubuntu1.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.14 Ubuntu:20.04:LTS
- Versions
- 1.14~beta1-1
- 1.14~beta1-2
- 1.14~rc1-1
- 1.14-1
- 1.14.1-1
- 1.14.2-1
- 1.14.2-1ubuntu1
- 1.14.3-2ubuntu2~20.04.1
- 1.14.3-2ubuntu2~20.04.2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.16 Ubuntu:Pro:20.04:LTS
- Versions
- 1.16.2-0ubuntu1~20.04
- 1.16.2-0ubuntu1~20.04.1
- 1.16.2-0ubuntu1~20.04.1+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.18 Ubuntu:20.04:LTS
- Versions
- 1.18.1-1ubuntu1~20.04.1
- 1.18.1-1ubuntu1~20.04.2
- 1.18.1-1ubuntu1~20.04.3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.20 Ubuntu:20.04:LTS
- Versions
- 1.20.3-1ubuntu0.1~20.04
- 1.20.3-1ubuntu0.1~20.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.21 Ubuntu:20.04:LTS
- Versions
- 1.21.1-1~ubuntu20.04.1
- 1.21.1-1~ubuntu20.04.2
- 1.21.1-1~ubuntu20.04.3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.17 Ubuntu:22.04:LTS
- Versions
- 1.17-1ubuntu2
- 1.17.3-1ubuntu1
- 1.17.3-1ubuntu2
- 1.17.13-3ubuntu1
- 1.17.13-3ubuntu1.2
- 1.17.13-3ubuntu1.3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.18 Ubuntu:22.04:LTS
- Versions
- 1.18~beta1-0ubuntu1
- 1.18~beta2-1ubuntu1
- 1.18~beta2-1ubuntu2
- 1.18~rc1-1ubuntu1
- 1.18-1ubuntu1
- 1.18.1-1ubuntu1
- 1.18.1-1ubuntu1.1
- 1.18.1-1ubuntu1.2
- 1.18.1-1ubuntu1.3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.20 Ubuntu:22.04:LTS
- Versions
- 1.20.3-1ubuntu0.1~22.04
- 1.20.3-1ubuntu0.1~22.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.21 Ubuntu:22.04:LTS
- Versions
- 1.21.1-1~ubuntu22.04.1
- 1.21.1-1~ubuntu22.04.2
- 1.21.1-1~ubuntu22.04.3
- 1.21.1-1~ubuntu22.04.4
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
golang-1.23 Ubuntu:22.04:LTS
- Versions
- 1.23.1-1~22.04
- 1.23.1-1~22.04.2
- 1.23.1-1~22.04.3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published