CVE-2026-82386Network attack vectorHinoki check available

Server-file disclosure via OPML external entities

Published Sep 28, 2026 · Updated Sep 28, 2026

XML external entity injection in Apache Roller 6.1.5 allows remote authenticated users to read server files through crafted OPML bookmark imports. The bookmark importer's JDOM SAXBuilder resolves external entities from attacker-supplied OPML instead of rejecting document type declarations and external references. Exploitation requires weblog administrator access; the parser can read files accessible to the Roller process and contact internal network addresses without non-default configuration.

CVSS severity7.7
High
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

XML external entity injection in Apache Roller 6.1.5 allows remote authenticated users to read server files through crafted OPML bookmark imports. The bookmark importer's JDOM SAXBuilder resolves external entities from attacker-supplied OPML instead of rejecting document type declarations and external references. Exploitation requires weblog administrator access; the parser can read files accessible to the Roller process and contact internal network addresses without non-default configuration.

The record

CVE
CVE-2026-82386
Published
Sep 28, 2026
Updated
Sep 28, 2026
Vendor
The Apache Software Foundation
Product
Apache Roller
Classifications
CWE-611, T1005
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Rollerversion=6.1.5

Published CVSS scores

7.7Apache Software FoundationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-611Improper Restriction of XML External Entity Reference
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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Technologies

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