vulnerability / NVI-00011869 / Revision 1
Nx: OS command injection via git revisions and remote refs
GitHub lists this reviewed advisory for nx, nx. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
nx
source listed>= 14.0.0, < 22.7.8
## Summary Nx core builds several `git` invocations as shell command strings with untrusted values interpolated into them, so a value that should be a git revision or ref is parsed by `/bin/sh` instead. Two entry points are reachable by an attacker: `affected` commands, where `defaultBase` / `affected.defaultBase` from `nx.json` (and the `NX_BASE` / `NX_HEAD` environment variables) reach `git merge-base` and `git diff`; and `nx import`, where a branch name advertised by a remote repository reaches `git fetch`, `git checkout`, and `git config`. In both cases an attacker who controls a repository — or who opens a pull request against one — gets arbitrary command execution on the machine of anyone who runs an ordinary Nx command against it, including CI runners. The `affected` path is the more serious of the two. `nx affected` and `nx show projects --affected` run constantly in CI, so a pull request that changes nothing but `nx.json` is enough to execute code on the runner with whatever credentials that job holds. ## Severity Exploitable by anyone who controls repository content — a fork's pull request, or a repository the victim clones — that the victim then runs an ordinary `nx
nx
source listed>= 23.0.0, < 23.1.1
## Summary Nx core builds several `git` invocations as shell command strings with untrusted values interpolated into them, so a value that should be a git revision or ref is parsed by `/bin/sh` instead. Two entry points are reachable by an attacker: `affected` commands, where `defaultBase` / `affected.defaultBase` from `nx.json` (and the `NX_BASE` / `NX_HEAD` environment variables) reach `git merge-base` and `git diff`; and `nx import`, where a branch name advertised by a remote repository reaches `git fetch`, `git checkout`, and `git config`. In both cases an attacker who controls a repository — or who opens a pull request against one — gets arbitrary command execution on the machine of anyone who runs an ordinary Nx command against it, including CI runners. The `affected` path is the more serious of the two. `nx affected` and `nx show projects --affected` run constantly in CI, so a pull request that changes nothing but `nx.json` is enough to execute code on the runner with whatever credentials that job holds. ## Severity Exploitable by anyone who controls repository content — a fork's pull request, or a repository the victim clones — that the victim then runs an ordinary `nx
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-w2vw-w76x-qr89 ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.