CVE-2021-27738 json
Improper Access Control to Streaming Coordinator & SSRF
published 2022-01-06 4 y ago modified 2026-06-17 4 mo ago also GHSA-wrx7-qgmj-mf2q , EUVD-2022-0730
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.6%
- EPSS 2.6% chance of exploitation in 30 days, percentile 85%
- public exploits
- 0
- none known
Summary
All request mappings in `StreamingCoordinatorController.java` handling `/kylin/api/streaming_coordinator/*` REST API endpoints did not include any security checks, which allowed an unauthenticated user to issue arbitrary requests, such as assigning/unassigning of streaming cubes, creation/modification and deletion of replica sets, to the Kylin Coordinator. For endpoints accepting node details in HTTP message body, unauthenticated (but limited) server-side request forgery (SSRF) can be achieved. This issue affects Apache Kylin Apache Kylin 3 versions prior to 3.1.2.
Patch / fix
- maven org.apache.kylin:kylin 3.1.3
- Apache Software Foundation Apache Kylin 3.1.2
- github.com/apache/kylin#1646 pull request
Exploit prediction
2.64% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.apache.kylin:kylin | <3.1.3 |
3.1.3 |
Affected products
- Apache Software Foundation Apache Kylin
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/apache/kylin/pull/1646
web
-
lists.apache.org
/thread/vkohh0to2vzwymyb2x13fszs3cs3vd70
web, mailing-list, vendor-advisory
-
openwall.com
/lists/oss-security/2022/01/06/6
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-27738
advisory
-
github.com
/apache/kylin
package
Sources
- CVE List CVE-2021-27738
- GitHub Advisory GHSA-wrx7-qgmj-mf2q
- NVD CVE-2021-27738
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