CVE-2017-12621
This could lead to XML External Entity (XXE) attacks in Apache Commons Jelly before 1.0.1.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
During Jelly (xml) file parsing with Apache Xerces, if a custom doctype entity is declared with a "SYSTEM" entity with a URL and that entity is used in the body of the Jelly file, during parser instantiation the parser will attempt to connect to said URL. This could lead to XML External Entity (XXE) attacks in Apache Commons Jelly before 1.0.1.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 8.13% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-611
- Affected
- apache/commons jelly
- Source
- security@apache.org
EPSS moved from 8.1% on 10 October 2026 to 8.1% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/101052Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039444Third Party Advisory, VDB Entry
- https://issues.apache.org/jira/browse/JELLY-293Issue Tracking, Patch, Vendor Advisory
- https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73%40%3Cdev.commons.apache.org%3E
- http://www.securityfocus.com/bid/101052Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1039444Third Party Advisory, VDB Entry
- https://issues.apache.org/jira/browse/JELLY-293Issue Tracking, Patch, Vendor Advisory
- https://lists.apache.org/thread.html/f1fc3f2c45264af44ce782d54b5908ac95f02bf7ad88bb57bfb04b73%40%3Cdev.commons.apache.org%3E
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.