CVE-2020-11975Public exploitNetwork attack vector

Unauthenticated code execution via unrestricted OGNL classes

Published Jun 5, 2020 · Updated Aug 4, 2024

Code injection in Apache Unomi 1.0.0 through 1.5.0 allows remote attackers to execute commands through crafted personalization conditions. The /context.json handler passes attacker-controlled profilePropertyCondition parameters to OGNL, whose unrestricted class resolution exposes Java Runtime execution. No authentication or user interaction is required; commands run with the permissions of the Unomi Java process.

CVSS severity9.8
Critical
EPSS probability29.89%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Apache Unomi 1.0.0 through 1.5.0 allows remote attackers to execute commands through crafted personalization conditions. The /context.json handler passes attacker-controlled profilePropertyCondition parameters to OGNL, whose unrestricted class resolution exposes Java Runtime execution. No authentication or user interaction is required; commands run with the permissions of the Unomi Java process.

The record

CVE
CVE-2020-11975
Published
Jun 5, 2020
Updated
Aug 4, 2024
Vendor
The Apache Software Foundation
Product
Apache Unomi
Classifications
T1059
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 5, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Apache Unomi 1.0.0 to 1.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Apache Software Foundation · Apache Unomiversion=Apache Unomi 1.0.0 to 1.5.0

Published CVSS scores

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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