CVE-2026-15895 OS command injection in jsii-diff in AWS jsii
High 8.4
Published
Updated
Check this codebase for CVE-2026-15895 and fix it if it is affected.
What it is: CVE-2026-15895 is a high-severity vulnerability in AWS jsii, published on 15 Jul 2026.
Exploitation: There is no known exploitation of CVE-2026-15895 in the wild and no public exploit code.
Affected packages and fixed versions:
- jsii-diff (npm): affected all versions; fixed in 1.131.0
- jsii-diff (npm): affected all versions; fixed in 1.131.0
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2026-15895/ (Markdown: https://insights.sbomify.com/CVE-2026-15895/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-15895?
CVE-2026-15895 is a high-severity vulnerability in AWS jsii, published on 15 Jul 2026.
Official description
OS command injection in the npm package loading component in AWS jsii-diff before 1.131.0 might allow context-dependent attackers to execute arbitrary commands via crafted package specifiers passed to the npm: source argument.
To mitigate this issue, users should upgrade to jsii-diff v1.131.0 or later.
Weakness: CWE-78
Which versions are affected by CVE-2026-15895?
2 open source packages ship an affected version, including jsii-diff.
| Package | Affected | Fixed in |
|---|---|---|
jsii-diff npm | All versions | 1.131.0 |
jsii-diff npm | All versions | 1.131.0 |
How do I fix CVE-2026-15895?
Upgrade jsii-diff to 1.131.0 or later.
Is CVE-2026-15895 being exploited?
There is no known exploitation of CVE-2026-15895 in the wild and no public exploit code.
Sources
Also known as GHSA-wcx4-wpfv-mc5c.