CVE-2017-9096

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 9.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-11-08 · updated 2026-06-17
Weakness: CWE-611

Description

The XML parsers in iText before 5.5.12 and 7.x before 7.0.3 do not disable external entities, which might allow remote attackers to conduct XML external entity (XXE) attacks via a crafted PDF.

Affected products

Apryse iText: before 5.5.12; 7.0.0, 7.0.1, 7.0.2 — fixed in 5.5.12

How to fix

Upgrade to a fixed version: Apryse iText 5.5.12. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/archive/1/541483/100/0/threaded
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03902en_us
https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2017-017_itext_xml_external_entity_attack.txt
https://www.oracle.com/security-alerts/cpuoct2020.html
http://www.securityfocus.com/archive/1/541483/100/0/threaded
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03902en_us
https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2017-017_itext_xml_external_entity_attack.txt
https://www.oracle.com/security-alerts/cpuoct2020.html

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