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SQL Injection in Apache SkyWalkingGHSA-grpf-gg7v-5g5h

CRITICALFix: apache/skywalking#4970

GHSA-grpf-gg7v-5g5h is a critical-severity (CVSS 9.8) SQL Injection vulnerability in org.apache.skywalking:oap-server. EPSS puts its 30-day exploitation probability at 33.5% (98th percentile). A fix is available for org.apache.skywalking:oap-server — see the affected versions and patch details below.

Also known asCVE-2020-13921PYSEC-2020-342
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
33.5%probability of exploitation in next 30 days
Moderate Risk0.00%
Lower risk than most CVEs98th percentile — riskier than 98% of all scored CVEsHighest risk
0.00%14.1%28.1%42.2%6.0%33.5%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-grpf-gg7v-5g5h by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,987 CVEs with a current EPSS score, this one falls in the 10–50% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
☕org.apache.skywalking:oap-server

Real-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

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

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.skywalking:oap-serverall versions8.1.0org.apache.skywalking:oap-server:8.1.0

Affected Products

1 product · 5 configurations
Application
skywalkingapache
5 versions
6.5.06.6.07.0.08.0.08.0.1

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.skywalking:oap-server, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.skywalking:oap-server to 8.1.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-grpf-gg7v-5g5h is resolved across your whole dependency graph.

  3. Workarounds

    Until you can upgrade, make sure every query built from user input uses parameterised statements or a prepared-statement API rather than string concatenation, and reduce the database account's privileges so an injected query cannot read or alter data beyond what the feature needs.

Frequently Asked Questions

Only when using H2/MySQL/TiDB as Apache SkyWalking storage, there is a SQL injection vulnerability in the wildcard query cases.
O3 Security · Impact-Aware SCA

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SQL Injection in Apache SkyWalking (Critical 9.8)