CVE-2026-29190 Karapace: Path Traversal in Backup Reader
Attackers can read arbitrary files on the server by providing a malicious backup file to Karapace deployments using backup/restore features.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-29190?
CVE-2026-29190 is a medium-severity path traversal vulnerability in Aiven-Open karapace, published on 7 Mar 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Karapace is an open-source implementation of Kafka REST and Schema Registry. Prior to version 6.0.0, there is a Path Traversal vulnerability in the backup reader (backup/backends/v3/backend.py). If a malicious backup file is provided to Karapace, an attacker may exploit insufficient path validation to perform arbitrary file read on the system where Karapace is running. The issue affects deployments that use the backup/restore functionality and process backups from untrusted sources. The impact depends on the file system permissions of the Karapace process. This issue has been patched in version 6.0.0.
Weakness: CWE-22
Which versions are affected by CVE-2026-29190?
It affects 1 product.
Products include Aiven Karapace.
How do I fix CVE-2026-29190?
No fix has been published for CVE-2026-29190 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-29190 being exploited?
There is no known exploitation of CVE-2026-29190 in the wild and no public exploit code.
Sources
Also known as GHSA-rw4j-p3jg-4fxq.