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Ubuntu 24.04 LTS ESAPI Critical XSS Control-Flow Bypass USN-8181-1

Several security issues were fixed in ESAPI.. ========================================================================== Ubuntu Security Notice USN-8181-1 April 16, 2026 libowasp-esapi-java vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: Several security issues were fixed in ESAPI. Software Description: - libowasp-esapi-java: Web application security control library from OWASP Details: Jaroslav Loba\u010devski discovered that ESAPI incorrectly validated directory paths during path verification. An attacker could possibly use this issue to bypass directory validation checks, leading to control-flow bypass. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-23457) Kevin W. Wall and Sebastian Passaro discovered that ESAPI did not properly sanitize javascript URLs because of an incorrect regular expression. An attacker could possibly use this issue to perform a cross-site scripting attack. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS. (CVE-2022-24891) Longlong Gong discovered that ESAPI did not properly neutralize special elements during SQL injection defense. A remote attacker could possibly use this issue to perform SQL injection. (CVE-2025-5878) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS libowasp-esapi-java 2.4.0.0-2ubuntu0.1 Ubuntu 22.04 LTS libowasp-esapi-java 2.2.3.1-1ubuntu0.1~esm1 Available with Ubuntu Pro libowasp-esapi-java-doc 2.2.3.1-1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 20.04 LTS libowasp-esapi-java 2.1.0-3ubuntu0.20.04.1~esm1 Available with Ubuntu Pro libowasp-esapi-java-doc 2.1.0-3ubuntu0.20.04.1~esm1 Available with Ubuntu Pro Ubuntu 18.04 LTS libowasp-esapi-java 2.1.0-3ubuntu0.18.04.1~esm1 Available with Ubuntu Pro libowasp-esapi-java-doc 2.1.0-3ubuntu0.18.04.1~esm1 Available with Ubuntu Pro Ubuntu 16.04 LTS libowasp-esapi-java 2.1.0-2ubuntu0.1~esm1 Available with Ubuntu Pro libowasp-esapi-java-doc 2.1.0-2ubuntu0.1~esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8181-1 CVE-2022-23457, CVE-2022-24891, CVE-2025-5878 Package Information: https://launchpad.net/ubuntu/+source/libowasp-esapi-java/2.4.0.0-2ubuntu0.1 . Several security issues in ESAPI for Ubuntu fixed. Ensure your systems are updated for better protection.. libowasp-esapi-java,Cross-Site Scripting,SQL Injection,Ubuntu Security Update. . Severity: Critical. LinuxSecurity.com Team

Apr 16, 2026 •Critical Ubuntu