CVE-2026-28811 Apache Software Foundation CVE debrief

Who should care

Users of Apache JSPWiki versions up to 2.12.3 should upgrade to version 2.12.4 to fix the issue. Operators, platform administrators, and security teams need to assess exposure, review system logs for potential exploitation, and implement compensating controls if immediate upgrade is not feasible. Vulnerability management and security teams should prioritize this issue due to its high severity and potential impact on sensitive information disclosure. IT teams responsible for system configurations and patch management should also be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The CVE-2026-28811 issue involves Debug Messages Revealing Unnecessary Information in Apache JSPWiki up to 2.12.3. The vulnerability allows attackers to access sensitive information through debug messages, potentially leading to information disclosure. Affected systems may require review of system logs and compensating controls. The CVSS score is 7.5 with a HIGH severity. Users are recommended to upgrade to version 2.12.4, which fixes this issue.

Defensive priority

Upgrade to version 2.12.4 to fix the issue.

Recommended defensive actions

• Upgrade to version 2.12.4
• Inventory checks for Apache JSPWiki versions up to 2.12.3
• Monitoring for potential exploitation attempts
• Review system logs for exposure
• Implement compensating controls for exposed systems
• Verify system configurations and patch status
• Track exceptions and retest remediated assets

Evidence notes

The CVE-2026-28811 issue involves Debug Messages Revealing Unnecessary Information in Apache JSPWiki up to 2.12.3. Evidence is limited; further verification is required to assess affected scope and validate vendor guidance. Defenders should verify system logs for exposure and review compensating controls.

Official resources