CVE-2020-13940

mediumpriority · track · 23EPSS 0.019 · 80 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.91% (80th) EPSS

CVSS 4.3 · medium

Is it mine?

4 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · osv · nvd

EPSS · scored 2026-10-27

In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).

cvss

Technical severity, 0–10. One row per scoring source.

5.5

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.04.3mediumAV:N/AC:M/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8.6 · impact 2.9

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 1.8 · impact 3.6

v3.15.5mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:Nsecondary · OSV

v3.15.1mediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-611USprimaryCWE-611US

affected products (4)

Products and version ranges known to be affected.

n/a Apache NiFi≤ Apache NiFi 1.0.0 to 1.11.4enisa_euvdEU
apache nifi1.0.0 → 1.11.4nvdUScpe:2.3:a:apache:nifi:*:*:*:*:*:*:*:*
Bitnami nifi1.0.0 → 1.11.4osvUSpkg:bitnami/nifi
Maven org.apache.nifi:nifi1.0.0 → 1.12.0-RC1osvUSpkg:maven/org.apache.nifi/nifi

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-q4xf-3pmq-3hw8Improper Restriction of XML External Entity Reference in Apache NiFi2022-01-06ghsa · osvUS
In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).
BIT-nifi-2020-139402025-09-12vendor · osvUS
In Apache NiFi 1.0.0 to 1.11.4, the notification service manager and various policy authorizer and user group provider objects allowed trusted administrators to inadvertently configure a potentially malicious XML file. The XML file has the ability to make external calls to services (via XXE).

also known as (5)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd osv nvd NVD CVE.org MITRE

published 2020-10-01modified 2026-06-17

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+1515 more

references (5)

External citations — patches, advisories, analysis.

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