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Vulnerabilities

Vulnerability · CVE-2026-27727

mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote valu…

Published Feb 25, 2026 · catalog updated Aug 17, 2026 · mchange commons java

Check if you run it

No confirmed exploitation is on record for CVE-2026-27727. EPSS is 1.62%. Act only if a listed version of mchange commons java is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.62%
Remediation
Advisory link
Affected products
cpe mchange/mchange commons java

mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote values, by which code can be downloaded and invoked within a running application. If an attacker can provoke an application to read a maliciously crafted or serialized object, they can provoke the download and execution of malicious code. Implementations of this functionality within the JDK were disabled by default behind a System property that defaults to , . However, since mchange-commons-java includes an independent implementation of JNDI derefencing, libraries (such as c3p0) that resolve references via that implementation could be provoked to download and execute malicious code even after the JDK was hardened. Mirroring the JDK patch, mchange-commons-java's JNDI functionality is gated by configuration parameters that default to restrictive values starting in version 0.4.0. No known workarounds are available. Versions prior to 0.4.0 should be avoided on application CLASSPATHs.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mchange/mchange commons javaversion unspecified

How to fix CVE-2026-27727

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-27727. EPSS is 1.62%. Act only if a listed version of mchange commons java is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-502: Deserialization of Untrusted Data; CWE-74: Injection. EPSS 1.62%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 25, 2026 · NIST NVD

    Detected

    mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote values, by which code can be downloaded and invoked within a running application. If an attacker can provoke an application to read a maliciously crafted or serialized object, they can provoke the download and execution of malicious code

  2. Aug 17, 2026 · NIST NVD

    Updated

    mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote values, by which code can be downloaded and invoked within a running application. If an attacker can provoke an application to read a maliciously crafted or serialized object, they can provoke the download and execution of malicious code

Sources

  • CVE.orgVulnerability recordCVE-2026-27727

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-27727

    30-day exploitation probability 1.6%

    first.org
  • NIST NVDVulnerability recordCVE-2026-27727

    mchange-commons-java, a library that provides Java utilities, includes code that mirrors early implementations of JNDI functionality, including support for remote values, by which code can be downloaded and invoked within a running application. If an attack

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.