CVE-2026-47065: ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy Asses

Q: How do I fix CVE-2026-47065?

mina: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Q: Is CVE-2026-47065 being exploited?

CVE-2026-47065 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-47065 affect?

CVE-2026-47065 affects mina. Severity is critical (CVSS 9.8). ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy Assessment: Fully addressed. When the serialised stream contains a TC_PROXYCLASSDESC (the marker for a java.lang.reflect.Proxy ), JD

Q: How urgent is CVE-2026-47065?

Priority 58/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

This month

CRITICAL 9.8REMOTEWATCHLISTDOWNGRADE

CVE-2026-47065 is a critical-severity flaw (CVSS 9.8) affecting mina. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy Assessment: Fully addressed. When the serialised stream contains a TC_PROXYCLASSDESC (the marker for a java.lang.reflect.Proxy ), JDK’s ObjectInputStream.readProxyDesc() is dispatched. JDK then calls the default ObjectInputStream.resolveProxyClass(interfaces) implementation, which performs Class.forName(intf, false, latestUserDefinedLoad

Why this priority

Critical severity
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 57%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-06-03
Last modified	2026-07-22

Publisher (CNA): Apache Software Foundation · Vendor: apache

Last updated 2026-07-22 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-03 11:16 UTCPublished CVE record published
2026-07-22 19:10 UTCUpdated Record last modified

apache mina DOWNGRADE

Affected: 2.0.29 · 2.1.13 · 2.2.8

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.0.29

1. Check installed version

apt-cache policy mina || rpm -q mina || mina --version

2. No fixed release: DOWNGRADE to a release before 2.0.29 (Debian / Ubuntu)

apt-cache madison mina sudo apt install mina=<VERSION_BEFORE_2.0.29> sudo apt-mark hold mina

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list mina sudo dnf downgrade mina-<VERSION_BEFORE_2.0.29> sudo dnf versionlock add mina

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Exact fixes by distribution

A distro patch exists: prefer upgrading over downgrading.

Maven · org.apache.mina:mina-core · FIXED · 2.2.8 · vulnerable: >= 2.2.0, < 2.2.8 · source

Set org.apache.mina:mina-core to 2.2.8 or later in pom.xml or build.gradle, then rebuild and redeploy.

Fedora 46 · arm-none-eabi-binutils-cs · FIXED · 2.47-1.fc46 · FEDORA-2026-7498616952 · source

sudo dnf upgrade --advisory=FEDORA-2026-7498616952

Debian 12 · mina · NO FIX YET

Debian 12 · mina2 · NO FIX YET

Debian 13 · mina2 · NO FIX YET

RHEL 8 · javapackages-tools:201801/maven-wagon · NOT AFFECTED

RHEL 9 · maven:3.9/maven-wagon · NOT AFFECTED

RHEL 9 · maven-wagon · NOT AFFECTED

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-47065?

mina: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-47065 being exploited?

CVE-2026-47065 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-47065 affect?

CVE-2026-47065 affects mina. Severity is critical (CVSS 9.8). ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy Assessment: Fully addressed. When the serialised stream contains a TC_PROXYCLASSDESC (the marker for a java.lang.reflect.Proxy ), JD

How urgent is CVE-2026-47065?

Priority 58/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Java vulnerabilities

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References

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