CVE-2026-82386: CWE-611: Improper Restriction of XML External Entity Reference in Apache Software Foundation Apache Roller
Improper Restriction of XML External Entity Reference in Apache Roller 6.1.5 allows a weblog administrator to read files readable by the Roller process and reach internal network addresses by importing a crafted OPML document, because the bookmark import parser does not disable external entity resolution. No non-default configuration is required; the import is reached through the administrator bookmark-import action. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which uses a hardened parser that disables external entities and document type declarations.
AI Analysis
Technical Summary
Apache Roller 6.1.5 contains an XML External Entity (XXE) vulnerability (CWE-611) in its bookmark import functionality. When an administrator imports a crafted OPML document, the parser improperly allows external entity resolution, enabling file disclosure and internal network access. This occurs without requiring any non-default configuration and is triggered via the administrator bookmark-import action. The issue is fixed in version 6.1.6, which uses a parser that disables external entities and document type declarations.
Potential Impact
An attacker with weblog administrator privileges can exploit this vulnerability to read arbitrary files accessible by the Roller process and potentially reach internal network addresses. This can lead to disclosure of sensitive information. The vulnerability does not impact integrity or availability directly but has a high confidentiality impact.
Mitigation Recommendations
Users should upgrade to Apache Roller version 6.1.6 or later, where the vulnerability is fixed by disabling external entity resolution and document type declarations in the parser. No other configuration changes are required. Since a fixed version is available, applying the official update is the recommended remediation.
CVE-2026-82386: CWE-611: Improper Restriction of XML External Entity Reference in Apache Software Foundation Apache Roller
Description
Improper Restriction of XML External Entity Reference in Apache Roller 6.1.5 allows a weblog administrator to read files readable by the Roller process and reach internal network addresses by importing a crafted OPML document, because the bookmark import parser does not disable external entity resolution. No non-default configuration is required; the import is reached through the administrator bookmark-import action. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which uses a hardened parser that disables external entities and document type declarations.
CVSS v3.1
Score 7.7high
Affected software
Apache Software Foundation
Apache Roller
pkg:maven/org.apache.roller/rollerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Apache Roller 6.1.5 contains an XML External Entity (XXE) vulnerability (CWE-611) in its bookmark import functionality. When an administrator imports a crafted OPML document, the parser improperly allows external entity resolution, enabling file disclosure and internal network access. This occurs without requiring any non-default configuration and is triggered via the administrator bookmark-import action. The issue is fixed in version 6.1.6, which uses a parser that disables external entities and document type declarations.
Potential Impact
An attacker with weblog administrator privileges can exploit this vulnerability to read arbitrary files accessible by the Roller process and potentially reach internal network addresses. This can lead to disclosure of sensitive information. The vulnerability does not impact integrity or availability directly but has a high confidentiality impact.
Mitigation Recommendations
Users should upgrade to Apache Roller version 6.1.6 or later, where the vulnerability is fixed by disabling external entity resolution and document type declarations in the parser. No other configuration changes are required. Since a fixed version is available, applying the official update is the recommended remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-08-28T20:55:50.657Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aba1bc6f7a7c541065ca3d9
Added to database: 09/28/2026, 07:48:22 UTC
Last enriched: 09/28/2026, 08:02:41 UTC
Last updated: 09/29/2026, 01:57:23 UTC
Views: 21
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