What is CVE-2026-82386?

CVE-2026-82386 is a high-severity vulnerability in Apache Software Foundation Roller, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.7/10. Published 2026-09-28.

How severe is CVE-2026-82386?

High severity. CVSS v3 base score is 7.7 out of 10.

XXE in Apache Software Foundation Roller

CVE-2026-82386

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.

Vulnerability class: XXE (XML External Entity)

Published 2026-09-28 · last modified 2026-09-28.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Apache Software Foundation Roller — versions 6.1.5

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

github.com/apache/roller/pull/173 (patch)
lists.apache.org/thread/mrtstv8odj7l9mcrto445lftrcpw0sxl (vendor-advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-82386?: CVE-2026-82386 is a high-severity vulnerability in Apache Software Foundation Roller, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.7/10. Published 2026-09-28.
How severe is CVE-2026-82386?: High severity. CVSS v3 base score is 7.7 out of 10.