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CVE-2026-50076

39
FAUCET Score

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.

First published: Jun 4, 2026Last modified: Jun 4, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 1.1.0CPE matchmatch criteria
cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.1CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
5.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.52%
Probability of exploitation in next 30 days
EPSS Percentile
41.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0052 is in the 20th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.apache.fory:fory-coreFixed in: 1.1.0
apachevendor investigatingvia vendor_rss
View patch

Vendor Advisories (2)

mavenGHSA-8f39-v287-78jfcritical

Apache Fory Java SDK Has Deserialization of Untrusted Data in the Java replace-resolve path

Jun 4, 2026
apacheapache:www.mail-archive.com/[email protected]/msg11199.html

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

Jun 4, 2026

References

openwall.com / lists/oss-security/2026/06/04/4
Mailing ListThird Party Advisory
fory.apache.org / security
Vendor Advisory