CVE-2026-50076 | Apache Fory: Java ReplaceResolverSerializer deserialization checks bypass

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.

Published: 2026-06-04 Last update: 2026-06-08 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-50076 is rated Moderate Risk (50.7/100): CVSS Critical severity, with low exploitation likelihood (EPSS 0.52%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-50076

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.18% 0.52% +0.34%
2 2026-06-10 0.07% 0.18% +0.11%
3 2026-06-05 — 0.07% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-50076

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.1 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 5.2 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-50076

GitHub Security Advisory for CVE-2026-50076

GHSA-8f39-v287-78jf · Severity: critical — Deserialization of Untrusted Data in the Java replace-resolve path in Apache Fory fory-core Java...

Affected software / configurations for CVE-2026-50076

Vendor Product Version Raw CPE
apache fory < 1.1.0 cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*

References for CVE-2026-50076

URL Tags
https://fory.apache.org/security Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/06/04/4 Mailing List Third Party Advisory
cvelogic Threat Intelligence