Path Traversal in Aiven Karapace
CVE-2026-29190
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Aiven Karapace
- Aiven-Open Karapace — versions < 6.0.0
Weakness classification (CWE)
References
- github.com/Aiven-Open/karapace/security/advisories/GHSA-rw4j-p3jg-4fxq (Mitigation, Vendor Advisory)
- github.com/Aiven-Open/karapace/releases/tag/6.0.0 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-29190?
- CVE-2026-29190 is a medium-severity vulnerability in Aiven Karapace, classified under Path Traversal. CVSS score: 4.1/10. Published 2026-03-07.
- How severe is CVE-2026-29190?
- Medium severity. CVSS v3 base score is 4.1 out of 10.