CVE-2021-22696

mediumpriority · track · 32EPSS 0.066 · 94 %ileDEEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

6.59% (94th) EPSS

CVSS 5 · medium

Is it mine?

21 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-918USprimaryCWE-400USCWE-400USCWE-918US

affected products (21)

Products and version ranges known to be affected.

IBM InfoSphere Information Serverall versionscert_bundDEcpe:/a:ibm:infosphere_information_server:-
IBM QRadar SIEM 7.3all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.3
IBM QRadar SIEM 7.4all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.4
IBM QRadar SIEM 7.5.0all versionscert_bundDEcpe:/a:ibm:qradar_siem:7.5.0
Apache Software Foundation Apache CXFunspecified → 3.3.10enisa_euvdEU
Apache Software Foundation Apache CXFunspecified → 3.4.3enisa_euvdEU
apache cxf< 3.3.10nvdUScpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
apache cxf3.4.0 → 3.4.3nvdUScpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
oracle business intelligence= 12.2.1.3.0nvdUScpe:2.3:a:oracle:business_intelligence:*:*:*:*:*:*:*:*
oracle business intelligence= 12.2.1.4.0nvdUScpe:2.3:a:oracle:business_intelligence:*:*:*:*:*:*:*:*
oracle business intelligence= 5.5.0.0.0nvdUScpe:2.3:a:oracle:business_intelligence:*:*:*:*:*:*:*:*
oracle business intelligence= 5.9.0.0.0nvdUScpe:2.3:a:oracle:business_intelligence:*:*:*:*:*:*:*:*
oracle communications diameter intelligence hub8.0.0 → 8.1.0nvdUScpe:2.3:a:oracle:communications_diameter_intelligence_hub:*:*:*:*:*:*:*:*
oracle communications diameter intelligence hub8.2.0 → 8.2.3nvdUScpe:2.3:a:oracle:communications_diameter_intelligence_hub:*:*:*:*:*:*:*:*
oracle communications element manager= 8.2.2nvdUScpe:2.3:a:oracle:communications_element_manager:*:*:*:*:*:*:*:*
oracle communications session report manager8.0.0 → 8.2.4.0nvdUScpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:*
oracle communications session route manager8.0.0 → 8.2.4nvdUScpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:*
Maven org.apache.cxf:apache-cxf< 3.3.10osvUSpkg:maven/org.apache.cxf/apache-cxf
Maven org.apache.cxf:apache-cxf3.4.0 → 3.4.3osvUSpkg:maven/org.apache.cxf/apache-cxf
Maven org.apache.cxf:cxf< 3.3.10osvUSpkg:maven/org.apache.cxf/cxf

showing 20 of 21

advisories (3)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2025-0227IBM QRadar SIEM: Mehrere SchwachstellenDeutsch2021-11-30csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um seine Privilegien zu erweitern, Administratorrechte zu erlangen, beliebigen Programmcode auszuführen, Informationen offenzulegen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.
WID-SEC-W-2025-1459Dell Data Protection Advisor: Mehrere SchwachstellenDeutsch2025-07-03csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Dell Data Protection Advisor ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, und um weitere nicht näher spezifizierte Angriffe durchzuführen.
GHSA-7q4h-pj78-j7vgAuthorization service vulnerable to DDos attacks in Apache CFX2021-05-13ghsa · osvUS
CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund nvd osv NVD CVE.org MITRE

published 2021-04-02modified 2026-06-17

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+4179 more

references (41)

External citations — patches, advisories, analysis.

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