HOMEVULNERABILITIESCVE-2021-22923
MEDIUM

CVE-2021-22923

CWE-319Published: August 5, 2021· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

When curl is instructed to get content using the metalink feature, and a user name and password are used to download the metalink XML file, those same credentials are then subsequently passed on to each of the servers from which curl will download or try to download the contents from. Often contrary to the user's expectations and intentions and without telling the user it happened.

NVD Source

Technical Analysis

CVE-2021-22923 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.3.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected Vendors & Products

Fedora1 product(s)
fedora
haxx1 product(s)
curl
netapp18 product(s)
cloud backupclustered data ontaphci management nodesolidfireh300s firmwareh300sh500s firmwareh500sh700s firmwareh700sh300e firmwareh300e+6
Oracle1 product(s)
mysql server
siemens1 product(s)
sinec infrastructure network services
splunk1 product(s)
universal forwarder
Source: NVD CPE · 24 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
PATCHhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
PATCHhttps://www.oracle.com/security-alerts/cpuoct2021.html
ADVISORYhttps://hackerone.com/reports/1213181
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
ADVISORYhttps://security.gentoo.org/glsa/202212-01
ADVISORYhttps://security.netapp.com/advisory/ntap-20210902-0003/
ADVISORYhttps://hackerone.com/reports/1213181
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/
ADVISORYhttps://security.gentoo.org/glsa/202212-01
ADVISORYhttps://security.netapp.com/advisory/ntap-20210902-0003/

All References (12)

→
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch · Third Party Advisory
→
https://hackerone.com/reports/1213181Exploit · Issue Tracking · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/Mailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202212-01Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210902-0003/Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch · Third Party Advisory
→
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch · Third Party Advisory
→
https://hackerone.com/reports/1213181Exploit · Issue Tracking · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FRUCW2UVNYUDZF72DQLFQR4PJEC6CF7V/Mailing List · Third Party Advisory
→
https://security.gentoo.org/glsa/202212-01Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20210902-0003/Third Party Advisory
→
https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2021-22923
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-319
CISA KEVNo
Affected6 vendor(s)
PublishedAug 5, 2021

Related CVEs (CWE-319)

CVE-2025-47419
10.0
CVE-2025-4378
10.0
CVE-2025-26199
9.8
CVE-2022-47714
9.8
CVE-2022-3929
9.8
CVE-2023-30354
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-22923 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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