What’s Vulnerable › Vulnerabilities

CVE-2021-31164: Apache Unomi log injection

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-04 · updated 2026-06-17
• Weakness: CWE-93

Description

Apache Unomi prior to version 1.5.5 allows CRLF log injection because of the lack of escaping in the log statements.

Affected products

• Apache Software Foundation Apache Unomi: before 1.5.5 — fixed in 1.5.5

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Unomi 1.5.5. Check the vendor advisory for mitigations.

References

• http://unomi.apache.org/security/cve-2021-31164
• http://unomi.apache.org/security/cve-2021-31164

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