CVE-2026-70436 Missing authorization in Jenkins External Workspace Manager Plugin
Attackers with Overall/Read permission can read unauthorized workspace files due to missing or improper permission checks in the Jenkins External Workspace Manager Plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-70436?
CVE-2026-70436 is a medium-severity missing authorization vulnerability in Jenkins External Workspace Manager Plugin, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Jenkins External Workspace Manager Plugin 1.4.1 and earlier does not perform a permission check (1.4.0 and earlier) or performs an improper permission check (1.4.1) when providing access to externally-managed workspaces through the workspace browser, allowing attackers with Overall/Read permission to read files in workspaces they are not authorized to access.
Weakness: CWE-862
Which versions are affected by CVE-2026-70436?
How do I fix CVE-2026-70436?
No fix has been published for CVE-2026-70436 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-70436 being exploited?
There is no known exploitation of CVE-2026-70436 in the wild and no public exploit code.
Sources
Also known as GHSA-w8fh-xx7f-5j67.