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CVE-2020-10199· NVD / CVE Program· CNA mitre

Sonatype Nexus Repository before 3.21.2 allows JavaEL Injection (issue 1 of 2).

HighCVSS 8.8 · v3.1KEVWeaponized Fix available
Published
Apr 1, 2020
Updated
Jun 16, 2026
EPSS
99.1% · 100th percentile
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Action score

95

Now

Patch today or shut off access.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
30 / 30 · Listed
EPSS
30 / 30 · 99.1%

CISA SSVC decision

Exploitation
active
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

Actively exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on Nov 3, 2021. That signals real attacks, not theory.

Remediation deadline for government agencies: May 3, 2022.

Affected systems

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-extdirectbefore 3.21.23.21.2

Same product

sonatype: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-10204Sonatype Nexus Repository before 3.21.2 allows Remote Code Execution.
    39Monitor
  • 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 files
    31Monitor
  • CVE-2014-2034Unspecified vulnerability in Sonatype Nexus OSS and Pro 2.4.0 through 2.7.1 allows attackers to create arbitrary user accounts via unknown v
    31Monitor
  • CVE-2014-0792Sonatype Nexus 1.x and 2.x before 2.7.1 allows remote attackers to create arbitrary objects and execute arbitrary code via unspecified vecto
    31Monitor
  • CVE-2020-24622In 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-extdirect3.21.2Package registry (OSV)

Exploit status

Weaponized

A ready exploit tool or active in-the-wild use is known for this vulnerability. This should be your top priority.

Evidence

  • Metasploit module ×1
  • Exploit-DB entry ×2
  • Nuclei detection template ×1
  • Proof-of-concept repository on GitHub ×7

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
Exploit-DB entrywebapps2021-01-06
Exploit-DB entryremote2020-04-17
Metasploit moduleexploit/linux/http/nexus_repo_manager_el_injectionNexus Repository Manager Java EL Injection RCEexploit2020-03-31
Nuclei detection templateNuclei template CVE-2020-10199 —
Proof-of-concept repository on GitHubstars:192020-04-07
Proof-of-concept repository on GitHubstars:352020-04-08
Proof-of-concept repository on GitHubstars:252020-04-08
Proof-of-concept repository on GitHubstars:422020-04-16
Proof-of-concept repository on GitHubstars:312020-05-15
Proof-of-concept repository on GitHubstars:02023-06-13
Proof-of-concept repository on GitHubstars:02025-05-21

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. Metasploit-2 d
  2. Published
  3. First PoC+5 d
  4. CISA KEV+580 d
  5. TodaySep 29, 2026+2372 d
EPSS, last 120 days

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

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

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

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • 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
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-917 · Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/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.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

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Change log

  1. Fix✗ → ✓

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References

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

All records