How severe is CVE-2020-17532?

CVE-2020-17532 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2020-17532?

CVE-2020-17532 affects the following packages: org.apache.servicecomb:java-chassis (Maven), org.apache.servicecomb:java-chassis (Maven). Ecosystems affected: Maven.

How do I fix CVE-2020-17532?

Update org.apache.servicecomb:java-chassis to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-17532 is resolved across your whole dependency graph.

How do I detect CVE-2020-17532 in my Maven dependencies?

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

How do I mitigate CVE-2020-17532 if there is no patch (or I can't update yet)?

Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Is CVE-2020-17532 actively exploited in the wild?

No public exploit code has been indexed for CVE-2020-17532 yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for CVE-2020-17532?

CVE-2020-17532 has an EPSS (Exploit Prediction Scoring System) score of 3.2%, placing it in the 88th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is CVE-2020-17532?

CVE-2020-17532 is classified as Improper Input Validation (CWE-20), Deserialization of Untrusted Data (CWE-502). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was CVE-2020-17532 published, and has it been updated?

CVE-2020-17532 was published on January 25, 2021 and was last updated on July 8, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

☕

☕ Maven

Not in CISA KEV

HIGH severity

CVE-2020-17532 — java-chassis

HIGHFix: apache/servicecomb-java-chassis@839a52e

CVE-2020-17532 is a high-severity (CVSS 8.8) Improper Input Validation vulnerability in org.apache.servicecomb:java-chassis. A fix is available for org.apache.servicecomb:java-chassis — see the affected versions and patch details below.

Arbitrary code execution in Apache ServiceComb java-chassis

Also known asGHSA-px4w-rcv2-6x8x

Published

Jan 25, 2021

Updated

Jul 8, 2026

Affected

2 pkgs

Patched

2 / 2

Exploits

None indexed

Exploitation data as of Sep 30, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗

3.2%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs88th percentile — riskier than 88% of all scored CVEsHighest risk

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

How urgent is this, really

CVE-2020-17532 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

2 pkgs affected

☕org.apache.servicecomb:java-chassis☕org.apache.servicecomb:java-chassis

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

When handler-router component is enabled in servicecomb-java-chassis, authenticated user may inject some data and cause arbitrary code execution. The problem happens in versions between 2.0.0 ~ 2.1.3 and fixed in Apache ServiceComb-Java-Chassis 2.1.5

Affected Packages

2 total 2 fixed

Ecosystem	Package	Vulnerable range	Fix
☕Maven	`org.apache.servicecomb:java-chassis`	≥ 1.0.0&&< 1.3.2	1.3.2`org.apache.servicecomb:java-chassis:1.3.2`
☕Maven	`org.apache.servicecomb:java-chassis`	≥ 2.0.0&&< 2.1.5	2.1.5`org.apache.servicecomb:java-chassis:2.1.5`

Affected Products

1 product · 1 configurations

Application

java chassisapache

≥ 2.0.0 && < 2.1.5

range

Detection & mitigation playbook

Open-source dependency

Detect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.servicecomb:java-chassis, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update org.apache.servicecomb:java-chassis to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-17532 is resolved across your whole dependency graph.
Workarounds
Do not deserialise data from untrusted sources: where the format allows it, restrict deserialisation to an explicit allowlist of expected types, and prefer a data-only format (JSON, Protobuf) over one that can reconstruct arbitrary objects until you can upgrade.

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2020-17532 in your dependencies?

Find it across Maven, including transitive dependencies.

Scan my dependencies How O3 SCA works

CVSS Score

8.8/10CVSS v3 base

Vector breakdown

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Raw vector

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

CWE Classification

CWE-20Improper Input Validation CWE-502Deserialization of Untrusted Data

Weaponization

No known public exploit tooling found.

OpenSSF Scorecard

Package health score

servicecomb-java-chassis

3.7/10

Code-Review2/10

Maintained0/10

Branch-Protection0/10

Assessed Sep 28, 2026

Timeline

Disclosed

Jan 25, 2021

Last updated

Jul 8, 2026

Identifiers

CVE-2020-17532

GHSA-px4w-rcv2-6x8x

References

Advisoryseclists.org Advisorynvd.nist.gov Fixissues.apache.org Webgithub.com Webgithub.com

Related vulnerabilities

This CVE is high severity; 2 of 8 other CVEs with CWE-20 are rated as high or higher (top: high).

CVE-2026-61794CVE-2026-81875CVE-2026-81876CVE-2026-61793GHSA-2xmm-m4wv-3fjhCVE-2026-56831CVE-2026-54529GHSA-cc9r-2j5m-2m83Browse all CWE-20

Provenance

Sources

OSV.devNVDFIRST.org (EPSS)

Last verifiedJul 8, 2026

CVE-2020-17532 — java-chassis

EPSS Exploitation Probability

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

Description

Affected Packages

Affected Products

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is CVE-2020-17532 in your dependencies?