What is CVE-2018-11796?

CVE-2018-11796 is a high-severity vulnerability in Apache Tika, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2018-10-09.

How severe is CVE-2018-11796?

High severity. CVSS v3 base score is 7.5 out of 10.

XXE in Apache Tika

CVE-2018-11796

In Apache Tika 1.19 (CVE-2018-11761), we added an entity expansion limit for XML parsing. However, Tika reuses SAXParsers and calls reset() after each parse, which, for Xerces2 parsers, as per the documentation, removes the user-specified…

Vulnerability class: XXE (XML External Entity)

EPSS: 0.069 (93.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Apache Tika
Apache Software Foundation Tika — versions Apache Tomcat 0.1 to 1.19

Weakness classification (CWE)

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

References

security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
security@apache.org (x_refsource_CONFIRM)
security@apache.org (x_refsource_CONFIRM)
security@apache.org (x_refsource_REDHAT, vendor-advisory)

Frequently asked questions

What is CVE-2018-11796?: CVE-2018-11796 is a high-severity vulnerability in Apache Tika, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.5/10. Published 2018-10-09.
How severe is CVE-2018-11796?: High severity. CVSS v3 base score is 7.5 out of 10.