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CVE-2021-21333

🗓️ 26 Mar 2021 20:00:19Reported by MendType 
mend
 mend
🔗 www.mend.io👁 8 Views

HTML injection in Synapse notification emails for missed messages or expiring accounts.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-21333
26 Mar 202120:15
–attackerkb
cnnvd
CNNVD
Matrix Synapse Cross-Site Script Vulnerability
26 Mar 202100:00
–cnnvd
cve
CVE
CVE-2021-21333
26 Mar 202120:00
–cve
cvelist
Cvelist
CVE-2021-21333 HTML injection in email and account expiry notifications
26 Mar 202120:00
–cvelist
debiancve
Debian CVE
CVE-2021-21333
26 Mar 202120:00
–debiancve
euvd
EUVD
EUVD-2021-0126
7 Oct 202500:30
–euvd
fedora
Fedora
[SECURITY] Fedora 34 Update: matrix-synapse-1.38.1-1.fc34
2 Aug 202101:05
–fedora
github
Github Security Blog
HTML injection in email and account expiry notifications
26 Mar 202119:53
–github
nvd
NVD
CVE-2021-21333
26 Mar 202120:15
–nvd
openvas
OpenVAS
Fedora: Security Advisory for matrix-synapse (FEDORA-2021-a627cfd31e)
2 Aug 202100:00
–openvas
Rows per page
Vulners
Node
matrixsynapseRange0.33.5–1.27.0

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06 Oct 2026 02:39Current
CVSS 22.6
CVSS 3.16.1
CVSS 47
EPSS0.01354
8