Golang 1.10: On Windows, when the target of Root.Mkdir or Root.MkdirAll is a junction pointing to an empty location
Affects golang-1.10Source GCVE Database
Not known to be exploited · CVSS 9.8 Critical.
Data as of 5 Nov 2026, 00:01 UTC
- EPSS
- 0.5% chance of exploitation in 30 days – higher than 46% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 8 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10golang-1.26pkg:deb/ubuntu/golang-1.26?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.10golang-1.27pkg:deb/ubuntu/golang-1.27?arch=source&distro=stonkingOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSgolang-1.23pkg:deb/ubuntu/golang-1.23?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSgolang-1.24pkg:deb/ubuntu/golang-1.24?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSgolang-1.25pkg:deb/ubuntu/golang-1.25?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Ubuntu 26.04 LTSgolang-1.26pkg:deb/ubuntu/golang-1.26?arch=source&distro=resoluteOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until a fix is available, avoid using Root.Mkdir or Root.MkdirAll on junctions pointing to empty locations or implement additional validation to restrict directory creation within intended boundaries.
Description
A vulnerability in Golang 1.10 on Windows allows directory creation at junction targets outside the intended root when using Root.Mkdir or Root.MkdirAll on junctions pointing to empty locations. This affects operations where the last path component is a junction. The flaw can lead to unauthorized directory creation outside the root directory.