CVE-2021-26558: Deserialization of Untrusted Data

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-11-11 · updated 2026-06-17
Weakness: CWE-502

Description

Deserialization of Untrusted Data vulnerability of Apache ShardingSphere-UI allows an attacker to inject outer link resources. This issue affects Apache ShardingSphere-UI Apache ShardingSphere-UI version 4.1.1 and later versions; Apache ShardingSphere-UI versions prior to 5.0.0.

Affected products

Apache Software Foundation Apache ShardingSphere-UI: from 4.1.1 before 5.0.0 — fixed in 5.0.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache ShardingSphere-UI 5.0.0. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2021/11/11/1
https://lists.apache.org/thread/4gzkm1zb6c97v9gl8lcz8ll5xr8o484c
http://www.openwall.com/lists/oss-security/2021/11/11/1
https://lists.apache.org/thread/4gzkm1zb6c97v9gl8lcz8ll5xr8o484c

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