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NVD / CVE Program· CNA mitre

CVE-2020-10204: Sonatype Nexus Repository before 3.21.2 allows Remote Code Execution.

HighCVSS 7.2 · v3.1—Proof of concept Fix available

Noroxi assessment

Priority: Plan (action score 40/100)

  • A ready-made attack module is public (Nuclei); exploiting it takes no special expertise.
  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 38.4% (FIRST EPSS); higher than 98.5% of all records.
  • Anyone who can reach it over the internet can trigger it. Administrator privileges are required. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: org.sonatype.nexus:nexus-core (Maven) 3.21.2.

Add it to your regular patch cycle. Upgrade to org.sonatype.nexus:nexus-core (Maven) 3.21.2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Published
Apr 1, 2020
Updated
Jun 16, 2026
EPSS
38.4% · 98th percentile

Report tools

JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
28 / 40 · 7.2 / 10
CISA KEV
0 / 30 · Not listed
EPSS
12 / 30 · 38.4%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2020-10204

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sonatypenexus

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • sonatype nexusbefore 3.21.2

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Mavenorg.sonatype.nexus:nexus-corebefore 3.21.23.21.2

Same product

sonatype: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-10199Sonatype Nexus Repository before 3.21.2 allows JavaEL Injection (issue 1 of 2).KEV
    95Now
  • CVE-2020-11444Sonatype Nexus Repository Manager 3.x up to and including 3.21.2 has Incorrect Access Control.
    38Monitor
  • CVE-2014-9389Directory traversal vulnerability in Sonatype Nexus OSS and Pro before 2.11.1-01 allows remote attackers to read or write to arbitrary…
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2014-2034Mar 31, 2014 · Unspecified vulnerability in Sonatype Nexus OSS and Pro 2.4.0 through 2.7.1 allows attackers to create arbitrary user accounts via unknown…
    31Monitor
  • ← EarlierCVE-2020-10203Apr 1, 2020 · Sonatype Nexus Repository before 3.21.2 allows XSS.
    19Monitor
  • Later →CVE-2020-24622Aug 25, 2020 · In Sonatype Nexus Repository 3.26.1, an S3 secret key can be exposed by an admin user.
    19Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Maven:org.sonatype.nexus:nexus-core3.21.2Package registry (OSV)

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Nuclei detection templateNuclei template CVE-2020-10204 —
Proof-of-concept repository on GitHubstars:132020-05-27

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+55 d
  3. TodayNov 12, 2026+2416 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Bug bounty scope

The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.

Not on record for this CVE: patch commit or PR link · researcher credit · variant or chain candidate.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records