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CVE-2021-21274

🗓️ 26 Feb 2021 18:15:00Reported by ubuntu.comType 
ubuntucve
 ubuntucve
🔗 ubuntu.com👁 26 Views

Synapse matrix homeserver vulnerability in .well-known file redirectio

Related
Packages
Refs
ReporterTitlePublishedViews
Family
Circl
CVE-2021-21274
26 Feb 202120:39
circl
CNNVD
Matrix Synapse 资源管理错误漏洞
26 Feb 202100:00
cnnvd
CNVD
Matrix Synapse Denial of Service Vulnerability (CNVD-2021-15493)
2 Mar 202100:00
cnvd
CVE
CVE-2021-21274
26 Feb 202117:25
cve
Cvelist
CVE-2021-21274 Denial of service attack via .well-known lookups
26 Feb 202117:25
cvelist
Debian CVE
CVE-2021-21274
26 Feb 202117:25
debiancve
EUVD
EUVD-2021-0124
7 Oct 202500:30
euvd
Fedora
[SECURITY] Fedora 34 Update: matrix-synapse-1.38.1-1.fc34
2 Aug 202101:05
fedora
Github Security Blog
Denial of service attack via .well-known lookups
1 Mar 202119:34
github
NVD
CVE-2021-21274
26 Feb 202118:15
nvd
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Ubuntu18.04anymatrix-synapse0matrix-synapse_0_any.deb
Ubuntu20.04anymatrix-synapse0matrix-synapse_0_any.deb

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26 Aug 2025 12:27Current
6.6Medium risk
Vulners AI Score6.6
CVSS 24.3
CVSS 3.14.3 - 6.5
EPSS0.02164
26