CVE-2020-13921

Name: CVE-2020-13921
Creator: NVD / NIST
Published: 2020-08-05T14:15:12.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 33.48%

Last modified Jun 17, 2026

CVE-2020-13921 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. **Resolved** Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.. EPSS estimates a 33.48% chance of exploitation in the next 30 days.

Description

**Resolved** Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

33.48%

98.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Apache	Skywalking	6.5.0
Apache	Skywalking	6.6.0
Apache	Skywalking	7.0.0
Apache	Skywalking	8.0.0
Apache	Skywalking	8.0.1

References

http://www.openwall.com/lists/oss-security/2020/08/05/3Mailing List, Third Party Advisory
https://github.com/apache/skywalking/pull/4970Third Party Advisory
https://lists.apache.org/thread.html/r6f3a934ebc54585d8468151a494c1919dc1ee2cccaf237ec434dbbd6%40%3Cdev.skywalking.apache.org%3E
http://www.openwall.com/lists/oss-security/2020/08/05/3Mailing List, Third Party Advisory
https://github.com/apache/skywalking/pull/4970Third Party Advisory
https://lists.apache.org/thread.html/r6f3a934ebc54585d8468151a494c1919dc1ee2cccaf237ec434dbbd6%40%3Cdev.skywalking.apache.org%3E

Timeline

Published: Aug 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13921?

**Resolved** Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.

How severe is CVE-2020-13921?

CVE-2020-13921 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 33.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13921?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13921?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST