CVE-2023-27602 — linkis
CRITICALCVE-2023-27602 is a critical-severity (CVSS 9.8) Unrestricted File Upload vulnerability in org.apache.linkis:linkis. A fix is available for org.apache.linkis:linkis — see the affected versions and patch details below.
Apache Linkis publicsercice module unrestricted upload of file
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- A successful exploit gives an attacker total control of the affected component, not partial access.
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for CVE-2023-27602.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
org.apache.linkis:linkisReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
In Apache Linkis <=1.3.1, The PublicService module uploads files without restrictions on the path to the uploaded files, and file types.
We recommend users upgrade the version of Linkis to version 1.3.2.
For versions
<=1.3.1, we suggest turning on the file path check switch in linkis.properties
wds.linkis.workspace.filesystem.owner.check=true
wds.linkis.workspace.filesystem.path.check=true
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.apache.linkis:linkis | all versions | 1.3.2org.apache.linkis:linkis:1.3.2 |
Affected Products
linkisapacheDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.linkis:linkis, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.linkis:linkis to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2023-27602 is resolved across your whole dependency graph.
Workarounds
Treat uploaded files as untrusted until proven otherwise: validate the actual content type rather than the supplied extension, store uploads outside the web root on a volume mounted without execute permission, and rename them to server-generated identifiers so an attacker cannot choose the path a request will later resolve.
Frequently Asked Questions
Is CVE-2023-27602 in your dependencies?
Find it across Maven, including transitive dependencies.