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CVE-2026-27727VulnerabilityPublished Updated

Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.16 security update

Affects Red HatSource GCVE Database

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Mentioned vulnerabilities

Authoritative record:CVE-2026-27727· High 8.9

Not known to be exploited · CVSS 8.9 High : upgrade Red Hat mchange-commons-java to 0.4.0 soon.

Data as of 30 Oct 2026, 05:46 UTC

CVSS 4.0 base score
8.9High
How severe the flaw is on the 0–10 CVSS scale.
Patch
Available – fixed in 0.4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 25 Feb 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.

What to do

Upgrade mchange-commons-java and com.mchange/mchange-commons-java to 0.4.0.

Affected software

ProductAffectedFixed in
swaldmanmchange-commons-javaAffected
  • <0.4.0
Fixed in
  • 0.4.0
Mavencom.mchange/mchange-commons-javapkg:maven/com.mchange/mchange-commons-javaOther threatsAffected
  • <0.4.0
Fixed in
  • 0.4.0

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

Red Hat JBoss Enterprise Application Platform 7 is a platform for Java applications based on the WildFly application runtime. This release of Red Hat JBoss Enterprise Application Platform 7.1.16 serves as a replacement for Red Hat JBoss Enterprise Application Platform 7.1.15, and includes bug fixes and enhancements. See the Red Hat JBoss Enterprise Application Platform 7.1.16 Release Notes for information about the most significant bug fixes and enhancements included in this release. Security Fix(es): * mchange-commons-java: mchange-commons-java: Arbitrary code execution via JNDI dereferencing of crafted objects [eap-7.1.z] (CVE-2026-27727) * com.mchange/c3p0: c3p0: Arbitrary Code Execution via deserialization of crafted objects [eap-7.1.z] (CVE-2026-27830) * netty-codec: Netty: Denial of Service via excessive memory allocation in LZ4FrameDecoder [eap-7.1.z] (CVE-2026-42583) * netty-handler-proxy: Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation [eap-7.1.z] (CVE-2026-42578) * netty-codec-http: Netty: HTTP Request Smuggling due to improper handling of conflicting HTTP/1.0 headers [eap-7.1.z] (CVE-2026-42581) * netty-codec-http: Netty: Request smuggling via malformed Transfer-Encoding parsing [eap-7.1.z] (CVE-2026-42585) * netty-codec-http: Netty: Incorrect HTTP response parsing leads to data confusion [eap-7.1.z] (CVE-2026-42584) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

References

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