CVE-2026-50076
Apache Fory: Java ReplaceResolverSerializer deserialization checks bypass
CVE-2026-50076 is a critical vulnerability (CVSS 9.1) in Apache Fory, published June 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. Fixed in org.apache.fory:fory-core 1.1.0.
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2026-50076- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-502
- Updated
- 2026-11-02
EUVDEUVD-2026-34300
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.
- Record
EUVD-2026-34300- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-8f39-v287-78jf
Apache Fory Java SDK Has Deserialization of Untrusted Data in the Java replace-resolve path
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.
- Record
GHSA-8f39-v287-78jf- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-502
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-50076- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-502
- Updated
- 2026-11-02
OSVGHSA-8f39-v287-78jf
Apache Fory Java SDK Has Deserialization of Untrusted Data in the Java replace-resolve path
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.
- Record
GHSA-8f39-v287-78jf- CVSS 3.1
- 9.1 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.apache.fory:fory-coreMaven |
before 1.1.0 | 1.1.0 |
org.apache.fory:fory-coreMaven |
before 1.1.0, plus listed versions 0.11.00.11.10.11.20.12.00.12.1 Show 11 moreShow less0.12.20.12.30.13.00.13.10.13.20.14.00.14.10.15.00.16.00.17.01.0.0 |
1.1.0 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-02 | created | CVE List, EUVD, GitHub Advisories, NVD, OSV |