# CVE-2025-3048: Path Traversal in AWS SAM CLI allows file copy to local cache > AWS SAM CLI copies symlinked files to local cache, allowing unauthorized users to read sensitive files accessible only within the Docker container. - **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 31 Mar 2025 - **Updated:** 14 Oct 2025 - **Also known as:** GHSA-pp64-wj43-xqcr, PYSEC-2026-1206 ## What is CVE-2025-3048? CVE-2025-3048 is a medium-severity path traversal vulnerability in AWS Serverless Application Model Command Line Interface, published on 31 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. ### Official description After completing a build with AWS Serverless Application Model Command Line Interface (SAM CLI) which include symlinks, the content of those symlinks are copied to the cache of the local workspace as regular files or directories. As a result, a user who does not have access to those symlinks outside of the Docker container would now have access via the local workspace. Users should upgrade to version 1.134.0 and ensure any forked or derivative code is patched to incorporate the new fixes. After upgrading, users must re-build their applications using the sam build --use-container to update the symlinks. Weakness: CWE-61 (UNIX Symbolic Link (Symlink) Following) ## Which versions are affected by CVE-2025-3048? 3 open source packages ship an affected version, including aws-sam-cli. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `aws-sam-cli` | PyPI | All versions | 1.134.0 | | `aws-sam-cli` | PyPI | All versions | 1.134.0 | | `aws-sam-cli` | PyPI | All versions | 1.134.0 | ## How do I fix CVE-2025-3048? Upgrade aws-sam-cli to 1.134.0 or later. ## Is CVE-2025-3048 being exploited? There is no known exploitation of CVE-2025-3048 in the wild and no public exploit code. ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-3048 and fix it if it is affected. What it is: CVE-2025-3048 is a medium-severity path traversal vulnerability in AWS Serverless Application Model Command Line Interface, published on 31 Mar 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2025-3048 in the wild and no public exploit code. Affected packages and fixed versions: - aws-sam-cli (PyPI): affected all versions; fixed in 1.134.0 - aws-sam-cli (PyPI): affected all versions; fixed in 1.134.0 - aws-sam-cli (PyPI): affected all versions; fixed in 1.134.0 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-2025-3048/ (Markdown: https://insights.sbomify.com/CVE-2025-3048/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-3048 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-3048 - OSV: https://osv.dev/vulnerability/CVE-2025-3048 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-3048/ Summaries are generated and may contain mistakes; the official description above is the record.