CVE-2026-50076: Deserialization of Untrusted Data in the Java replace-resolve path in Apache Fory fory-core Java SDK before 1.

Q: How do I fix CVE-2026-50076?

fory: upgrade to 1.1.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-50076 being exploited?

CVE-2026-50076 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-2026-50076 affect?

CVE-2026-50076 affects fory. Severity is critical (CVSS 9.1). Deserialization of Untrusted Data in the Java replace-resolve path in Apache Fory fory-core Java SDK before 1.1.0 on Java/JVM platforms allows a remote attacker to bypass class registration, TypeChecker, and DisallowedList checks and invoke

Q: How urgent is CVE-2026-50076?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action; On your watchlist

This month

CRITICAL 9.1REMOTEWATCHLISTUPGRADE

CVE-2026-50076 is a critical-severity flaw (CVSS 9.1) affecting fory. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Deserialization of Untrusted Data in the Java replace-resolve path in Apache Fory fory-core Java SDK before 1.1.0 on Java/JVM platforms allows a remote attacker to bypass class registration, TypeChecker, and DisallowedList checks and invoke classpath-present readResolve/readExternal hooks via crafted Fory serialized data. Users are recommended to upgrade to version 1.1.0 or later, which fixes this issue.

Why this priority

Critical severity
Remotely exploitable, no login, no user action
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 56%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-06-04
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

2026-06-04 17:16 UTCPublished CVE record published
2026-07-22 20:10 UTCUpdated Record last modified

apache fory UPGRADE

Affected: < 1.1.0

Fixed in: 1.1.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 1.1.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade fory

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade fory

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-50076?

fory: upgrade to 1.1.0. Exact commands for each OS are on this page.

Is CVE-2026-50076 being exploited?

CVE-2026-50076 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-2026-50076 affect?

CVE-2026-50076 affects fory. Severity is critical (CVSS 9.1). Deserialization of Untrusted Data in the Java replace-resolve path in Apache Fory fory-core Java SDK before 1.1.0 on Java/JVM platforms allows a remote attacker to bypass class registration, TypeChecker, and DisallowedList checks and invoke

How urgent is CVE-2026-50076?

Priority 53/100. Critical severity; Remotely exploitable, no login, no user action; On your watchlist

Software pages

Java vulnerabilities

Related CVEs

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CVE-2026-64606 CRITICAL 9.8 UPGRADE Deserialization of untrusted data vulnerability that may allow class-registration checks to be bypassed during
CVE-2026-64609 CRITICAL 9.1 UPGRADE Out-of-bounds read via sun.misc.Unsafe in Apache Fory
CVE-2026-60080 HIGH 7.3 UPGRADE Use After Free vulnerability in the Rust deserialization logic of Apache Fory
CVE-2026-71558 CRITICAL 9.8 UPGRADE Heap type confusion vulnerability in Apache Fory C++ deserialization. This issue affects Apache Fory C++ vers

References

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