How severe is CVE-2026-50076?

CVE-2026-50076 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-50076 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-50076?

CVE-2026-50076 affects Apache Fory. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-50076?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-50076 have an EU (EUVD) identifier?

Yes. CVE-2026-50076 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34300.

When was CVE-2026-50076 published?

CVE-2026-50076 was published on 2026-06-04 and last updated on 2026-06-17.

CVE-2026-50076

CVE-2026-50076 is a critical-severity vulnerability in Apache Fory with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-34300
Weakness: CWE-502
Affected product: Apache Fory
Published: 2026-06-04
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-50076?: 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.
How severe is CVE-2026-50076?: CVE-2026-50076 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-50076 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-50076?: CVE-2026-50076 affects Apache Fory. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-50076?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-50076 have an EU (EUVD) identifier?: Yes. CVE-2026-50076 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34300.
When was CVE-2026-50076 published?: CVE-2026-50076 was published on 2026-06-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*

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