CVE-2016-9487 json
EpubCheck 4.0.1 is vulnerable to external XML entity processing attacks
published 2018-07-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10293
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.3%
- EPSS 1.3% chance of exploitation in 30 days, percentile 69%
- public exploits
- 0
- none known
Summary
EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.
Exploit prediction
1.26% chance of exploitation in the next 30 days, higher than 69% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- EpubCheck EpubCheck
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
kb.cert.org
/vuls/id/779243
third-party-advisory, us-government-resource
-
securityfocus.com
/bid/94864/
vdb-entry, third-party-advisory
Sources
- CVE List CVE-2016-9487
- NVD CVE-2016-9487
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.