CVE-2024-45816 Storage bucket Directory Traversal in @backstage/plugin-techdocs-backend
Attackers can access unauthorized files in S3 or GCS buckets and bypass permission checks when using specific storage providers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-45816?
CVE-2024-45816 is a medium-severity path traversal vulnerability in Linuxfoundation Backstage, published on 17 Sep 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Backstage is an open framework for building developer portals. When using the AWS S3 or GCS storage provider for TechDocs it is possible to access content in the entire storage bucket. This can leak contents of the bucket that are not intended to be accessible, as well as bypass permission checks in Backstage. This has been fixed in the 1.10.13 release of the `@backstage/plugin-techdocs-backend` package. All users are advised to upgrade. There are no known workarounds for this vulnerability.
Which versions are affected by CVE-2024-45816?
2 open source packages ship an affected version, including @backstage/plugin-techdocs-backend. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@backstage/plugin-techdocs-backend npm | All versions | 1.10.13 |
@backstage/plugin-techdocs-backend npm | All versions | 1.10.13 |
Products include Linuxfoundation Backstage.
How do I fix CVE-2024-45816?
Upgrade @backstage/plugin-techdocs-backend to 1.10.13 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2024-45816 being exploited?
There is no known exploitation of CVE-2024-45816 in the wild and no public exploit code.
Other vulnerabilities in Linuxfoundation Backstage
- CVE-2026-106501 Backstage: Sensitive information exposure in Scaffolder
- CVE-2026-106558 Backstage: Improper validation of TechDocs MkDocs configuration
- CVE-2026-88064 Backstage: Improper input validation in TechDocs MkDocs configuration
- CVE-2026-106459 Backstage: Improper input validation in Sentry scaffolder actions
- CVE-2026-106486 Backstage: Improper filesystem validation in Bitbucket pull-request scaffolder actions
Sources
Also known as GHSA-39v3-f278-vj3g.