Severity:
CVSS 4.0: 2.1 (low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/S:N/AU:N/V:D/RE:L/U:Green
Affected versions:
- Apache Shiro (org.apache.shiro:shiro-web) before 3.0.2
- Apache Shiro (org.apache.shiro:shiro-jakarta-ee) 2.0.0-alpha-0 before 3.0.2
Description:
The shiro:principal tags in shiro-web (Jakarta Pages) and shiro-jakarta-ee
(Jakarta Faces) did not escape their output, which could allow cross-site
scripting when a principal value is not fully trusted.
This issue affects all Apache Shiro versions through 3.0.1, only when the
principal tag is used.
Mitigation: Upgrade to version 3.0.2 or later, which escapes the output.
Alternatively, validate principal values on input.
Credit:
The ASF, found using Claude agents to study the security of open-source
projects, validated and reported by Apache Shiro (finder)
Lenny Primak <[email protected]> (remediation developer)
References:
https://shiro.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-129320
