CVE-2017-12623 json
XML External Entity Reference in Apache NiFi
published 2017-10-10 9 y ago modified 2026-06-17 4 mo ago also GHSA-qj7f-j6h9-g5rq , EUVD-2022-4986
- cvss
- 6.5
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
An authorized user could upload a template which contained malicious code and accessed sensitive files via an XML External Entity (XXE) attack. The fix to properly handle XML External Entities was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
Patch / fix
- maven org.apache.nifi:nifi 1.4.0
Exploit prediction
1.94% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
| GitHub | 3.0 | 6.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.apache.nifi:nifi | >=1.0.0, <1.4.0 |
1.4.0 |
Affected products
- Apache Software Foundation Apache NiFi
Classification
- Weakness
-
- CWE-611 Improper Restriction of XML External Entity Reference
References
-
nifi.apache.org
/security.html#CVE-2017-12623
web, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2017-12623
advisory
Sources
- CVE List CVE-2017-12623
- GitHub Advisory GHSA-qj7f-j6h9-g5rq
- NVD CVE-2017-12623
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