CVE-2020-13921
SQL Injection in Apache SkyWalking
Resolved Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Resolved Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
- Record
CVE-2020-13921- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-89
- Updated
- 2026-11-02
CVE List No score
Resolved Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
- Record
CVE-2020-13921- Updated
- 2026-11-02
EUVDEUVD-2020-0044 No score
Resolved Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
- Record
EUVD-2020-0044- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-grpf-gg7v-5g5h
SQL Injection in Apache SkyWalking
Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
- Record
GHSA-grpf-gg7v-5g5h- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-89
- Updated
- 2026-11-02
OSV
Resolved Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
- Record
CVE-2020-13921- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-grpf-gg7v-5g5h
SQL Injection in Apache SkyWalking
Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
- Record
GHSA-grpf-gg7v-5g5h- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-89
- Updated
- 2026-11-02
OSVPYSEC-2020-342
Resolved Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
- Record
PYSEC-2020-342- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.skywalking:oap-serverMaven |
before 8.1.0 | 8.1.0 |
org.apache.skywalking:oap-serverMaven |
before 8.1.0, plus listed versions 6.0.0-GA6.0.0-alpha6.0.0-beta6.1.06.2.0 Show 7 moreShow less6.3.06.4.06.5.06.6.07.0.08.0.08.0.1 |
8.1.0 |
apache-skywalkingPyPI |
All versions, plus listed versions 0.1.00.2.00.3.00.4.00.5.0 Show 7 moreShow less0.6.00.7.00.8.01.0.01.0.11.1.01.2.0 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-13921 is a critical vulnerability (CVSS 9.8) in Apache Skywalking, published August 5, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 33.5%, the 98th percentile. Fixed in org.apache.skywalking:oap-server 8.1.0.
References
github.com/apache/skywalking/pull/4970
openwall.com/lists/oss-security/2020/08/05/3
lists.apache.org/thread.html/r6f3a934ebc54585d8468151a494c1919dc1ee2cccaf237ec434dbbd6%40%3Cdev.skywalking.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2020-13921