CVE-2021-44145

mediumpriority · track · 27EPSS 0.018 · 78 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.76% (78th) EPSS

CVSS 4 · 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 the TransformXML processor of Apache NiFi before 1.15.1 an authenticated user could configure an XSLT file which, if it included malicious external entity calls, may reveal sensitive information.

cvss

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

6.5

010

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

v2.04mediumAV:N/AC:L/Au:S/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 8 · impact 2.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:Nsecondary · OSV

v3.16mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-200USprimaryCWE-200US

affected products (4)

Products and version ranges known to be affected.

Apache Software Foundation Apache NiFi≤ Apache NiFi ≤1.15.0enisa_euvdEU
apache nifi0.1.0 → 1.15.1nvdUScpe:2.3:a:apache:nifi:*:*:*:*:*:*:*:*
Bitnami nifi0.1.0 → 1.15.1osvUSpkg:bitnami/nifi
Maven org.apache.nifi:nifi< 1.15.1osvUSpkg:maven/org.apache.nifi/nifi

advisories (2)

Vendor and ecosystem advisories describing this.

GHSA-rq96-qhc5-vm4rExposure of Sensitive Information to an Unauthorized Actor in Apache NiFi2022-01-05ghsa · osvUS
In the TransformXML processor of Apache NiFi before 1.15.1 an authenticated user could configure an XSLT file which, if it included malicious external entity calls, may reveal sensitive information.
BIT-nifi-2021-44145Apache NiFi information disclosure by XXE2025-09-12vendor · osvUS
In the TransformXML processor of Apache NiFi before 1.15.1 an authenticated user could configure an XSLT file which, if it included malicious external entity calls, may reveal sensitive information.

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 2021-12-17modified 2026-06-17

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+19392 more

references (8)

External citations — patches, advisories, analysis.

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