CVE-2026-82376 Apache Software Foundation CVE debrief

Who should care

Administrators of Apache Roller 6.1.5 servers, users with entry-editing rights on weblogs, and security teams responsible for monitoring server logs. They should be aware of the vulnerability and take necessary actions to prevent disclosure of files readable by the Roller process.

Why it matters

CVE-2026-82376 is a high-severity vulnerability in Apache Roller 6.1.5 that allows a user with entry-editing rights to disclose files readable by the Roller process. Administrators should upgrade to Apache Roller 6.1.6 or later to prevent this vulnerability.

• Disclosure of files readable by the Roller process
• Potential for unauthorized access to sensitive information

Technical summary

The vulnerability allows a user with entry-editing rights on a weblog to cause the server to parse an attacker-influenced trackback response with an XML parser that does not disable external entity resolution, leading to disclosure of files readable by the Roller process. The Trackback control is hidden in the standard UI, but its action remains directly reachable, and no non-default server configuration is required. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which removes the outbound trackback response parser. This can lead to unauthorized access to sensitive information.

Defensive priority

Upgrade to Apache Roller 6.1.6 or later to prevent disclosure of files readable by the Roller process.

Recommended defensive actions

• Upgrade to Apache Roller 6.1.6 or later
• Restrict access to entry-editing rights on weblogs
• Monitor server logs for suspicious activity
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• technicalSummary
• whoShouldCare

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, and source references are available from [email protected]. The Trackback control is hidden in the standard UI, but its action remains directly reachable, and no non-default server configuration is required. Disclosure of files readable by the Roller process can occur.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.