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Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2023-42453

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. Users were able to forge read receipts for any event (if they knew the room ID and event ID). Note that the users were not able to view the events, but simply mark it as read. This could be confusing as clients will show the event as read by the user, even if they are not in the room. This issue has been patched in version 1.93.0. Users are advised to upgrade. There are no known workarounds for this issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 28.0%
CVSS Severity
CVSS v3 Score 3.1
References
Products affected by CVE-2023-42453
  • Matrix » Synapse » Version: 1.34.0
    cpe:2.3:a:matrix:synapse:1.34.0
  • Matrix » Synapse » Version: 1.35.0
    cpe:2.3:a:matrix:synapse:1.35.0
  • Matrix » Synapse » Version: 1.35.1
    cpe:2.3:a:matrix:synapse:1.35.1
  • Matrix » Synapse » Version: 1.36.0
    cpe:2.3:a:matrix:synapse:1.36.0
  • Matrix » Synapse » Version: 1.37.0
    cpe:2.3:a:matrix:synapse:1.37.0
  • Matrix » Synapse » Version: 1.37.1
    cpe:2.3:a:matrix:synapse:1.37.1
  • Matrix » Synapse » Version: 1.38.0
    cpe:2.3:a:matrix:synapse:1.38.0
  • Matrix » Synapse » Version: 1.38.1
    cpe:2.3:a:matrix:synapse:1.38.1
  • Matrix » Synapse » Version: 1.39.0
    cpe:2.3:a:matrix:synapse:1.39.0
  • Matrix » Synapse » Version: 1.40.0
    cpe:2.3:a:matrix:synapse:1.40.0
  • Matrix » Synapse » Version: 1.41.0
    cpe:2.3:a:matrix:synapse:1.41.0
  • Matrix » Synapse » Version: 1.41.1
    cpe:2.3:a:matrix:synapse:1.41.1
  • Matrix » Synapse » Version: 1.42.0
    cpe:2.3:a:matrix:synapse:1.42.0
  • Matrix » Synapse » Version: 1.43.0
    cpe:2.3:a:matrix:synapse:1.43.0
  • Matrix » Synapse » Version: 1.44.0
    cpe:2.3:a:matrix:synapse:1.44.0
  • Matrix » Synapse » Version: 1.45.0
    cpe:2.3:a:matrix:synapse:1.45.0
  • Matrix » Synapse » Version: 1.45.1
    cpe:2.3:a:matrix:synapse:1.45.1
  • Matrix » Synapse » Version: 1.46.0
    cpe:2.3:a:matrix:synapse:1.46.0
  • Matrix » Synapse » Version: 1.47.0
    cpe:2.3:a:matrix:synapse:1.47.0
  • Matrix » Synapse » Version: 1.47.1
    cpe:2.3:a:matrix:synapse:1.47.1
  • Matrix » Synapse » Version: 1.48.0
    cpe:2.3:a:matrix:synapse:1.48.0
  • Matrix » Synapse » Version: 1.49.0
    cpe:2.3:a:matrix:synapse:1.49.0
  • Matrix » Synapse » Version: 1.49.1
    cpe:2.3:a:matrix:synapse:1.49.1
  • Matrix » Synapse » Version: 1.49.2
    cpe:2.3:a:matrix:synapse:1.49.2
  • Matrix » Synapse » Version: 1.50.0
    cpe:2.3:a:matrix:synapse:1.50.0
  • Matrix » Synapse » Version: 1.50.1
    cpe:2.3:a:matrix:synapse:1.50.1
  • Matrix » Synapse » Version: 1.50.2
    cpe:2.3:a:matrix:synapse:1.50.2
  • Matrix » Synapse » Version: 1.51.0
    cpe:2.3:a:matrix:synapse:1.51.0
  • Matrix » Synapse » Version: 1.52.0
    cpe:2.3:a:matrix:synapse:1.52.0
  • Matrix » Synapse » Version: 1.53.0
    cpe:2.3:a:matrix:synapse:1.53.0
  • Matrix » Synapse » Version: 1.54.0
    cpe:2.3:a:matrix:synapse:1.54.0
  • Matrix » Synapse » Version: 1.55.0
    cpe:2.3:a:matrix:synapse:1.55.0
  • Matrix » Synapse » Version: 1.55.1
    cpe:2.3:a:matrix:synapse:1.55.1
  • Matrix » Synapse » Version: 1.55.2
    cpe:2.3:a:matrix:synapse:1.55.2
  • Matrix » Synapse » Version: 1.56.0
    cpe:2.3:a:matrix:synapse:1.56.0
  • Matrix » Synapse » Version: 1.57.0
    cpe:2.3:a:matrix:synapse:1.57.0
  • Matrix » Synapse » Version: 1.57.1
    cpe:2.3:a:matrix:synapse:1.57.1
  • Matrix » Synapse » Version: 1.58.0
    cpe:2.3:a:matrix:synapse:1.58.0
  • Matrix » Synapse » Version: 1.58.1
    cpe:2.3:a:matrix:synapse:1.58.1
  • Matrix » Synapse » Version: 1.59.0
    cpe:2.3:a:matrix:synapse:1.59.0
  • Matrix » Synapse » Version: 1.59.1
    cpe:2.3:a:matrix:synapse:1.59.1
  • Matrix » Synapse » Version: 1.60.0
    cpe:2.3:a:matrix:synapse:1.60.0
  • Matrix » Synapse » Version: 1.61.0
    cpe:2.3:a:matrix:synapse:1.61.0
  • Matrix » Synapse » Version: 1.61.1
    cpe:2.3:a:matrix:synapse:1.61.1
  • Matrix » Synapse » Version: 1.62.0
    cpe:2.3:a:matrix:synapse:1.62.0
  • Matrix » Synapse » Version: 1.63.0
    cpe:2.3:a:matrix:synapse:1.63.0
  • Matrix » Synapse » Version: 1.63.1
    cpe:2.3:a:matrix:synapse:1.63.1
  • Matrix » Synapse » Version: 1.64.0
    cpe:2.3:a:matrix:synapse:1.64.0
  • Matrix » Synapse » Version: 1.65.0
    cpe:2.3:a:matrix:synapse:1.65.0
  • Matrix » Synapse » Version: 1.66.0
    cpe:2.3:a:matrix:synapse:1.66.0
  • Matrix » Synapse » Version: 1.67.0
    cpe:2.3:a:matrix:synapse:1.67.0
  • Matrix » Synapse » Version: 1.68.0
    cpe:2.3:a:matrix:synapse:1.68.0
  • Matrix » Synapse » Version: 1.69.0
    cpe:2.3:a:matrix:synapse:1.69.0
  • Matrix » Synapse » Version: 1.70.0
    cpe:2.3:a:matrix:synapse:1.70.0
  • Matrix » Synapse » Version: 1.70.1
    cpe:2.3:a:matrix:synapse:1.70.1
  • Matrix » Synapse » Version: 1.71.0
    cpe:2.3:a:matrix:synapse:1.71.0
  • Matrix » Synapse » Version: 1.72.0
    cpe:2.3:a:matrix:synapse:1.72.0
  • Matrix » Synapse » Version: 1.73.0
    cpe:2.3:a:matrix:synapse:1.73.0
  • Matrix » Synapse » Version: 1.74.0
    cpe:2.3:a:matrix:synapse:1.74.0
  • Matrix » Synapse » Version: 1.75.0
    cpe:2.3:a:matrix:synapse:1.75.0
  • Matrix » Synapse » Version: 1.76.0
    cpe:2.3:a:matrix:synapse:1.76.0
  • Matrix » Synapse » Version: 1.77.0
    cpe:2.3:a:matrix:synapse:1.77.0
  • Matrix » Synapse » Version: 1.78.0
    cpe:2.3:a:matrix:synapse:1.78.0
  • Matrix » Synapse » Version: 1.79.0
    cpe:2.3:a:matrix:synapse:1.79.0
  • Matrix » Synapse » Version: 1.80.0
    cpe:2.3:a:matrix:synapse:1.80.0
  • Matrix » Synapse » Version: 1.81.0
    cpe:2.3:a:matrix:synapse:1.81.0
  • Matrix » Synapse » Version: 1.82.0
    cpe:2.3:a:matrix:synapse:1.82.0
  • Matrix » Synapse » Version: 1.83.0
    cpe:2.3:a:matrix:synapse:1.83.0
  • Matrix » Synapse » Version: 1.84.0
    cpe:2.3:a:matrix:synapse:1.84.0
  • Matrix » Synapse » Version: 1.84.1
    cpe:2.3:a:matrix:synapse:1.84.1
  • Matrix » Synapse » Version: 1.85.0
    cpe:2.3:a:matrix:synapse:1.85.0
  • Matrix » Synapse » Version: 1.85.1
    cpe:2.3:a:matrix:synapse:1.85.1
  • Matrix » Synapse » Version: 1.85.2
    cpe:2.3:a:matrix:synapse:1.85.2
  • Matrix » Synapse » Version: 1.86.0
    cpe:2.3:a:matrix:synapse:1.86.0
  • Matrix » Synapse » Version: 1.87.0
    cpe:2.3:a:matrix:synapse:1.87.0
  • Matrix » Synapse » Version: 1.88.0
    cpe:2.3:a:matrix:synapse:1.88.0
  • Matrix » Synapse » Version: 1.89.0
    cpe:2.3:a:matrix:synapse:1.89.0
  • Matrix » Synapse » Version: 1.90.0
    cpe:2.3:a:matrix:synapse:1.90.0
  • Matrix » Synapse » Version: 1.91.0
    cpe:2.3:a:matrix:synapse:1.91.0
  • Matrix » Synapse » Version: 1.91.1
    cpe:2.3:a:matrix:synapse:1.91.1
  • Matrix » Synapse » Version: 1.91.2
    cpe:2.3:a:matrix:synapse:1.91.2
  • Matrix » Synapse » Version: 1.92.0
    cpe:2.3:a:matrix:synapse:1.92.0
  • Matrix » Synapse » Version: 1.92.1
    cpe:2.3:a:matrix:synapse:1.92.1
  • Matrix » Synapse » Version: 1.92.2
    cpe:2.3:a:matrix:synapse:1.92.2
  • Matrix » Synapse » Version: 1.92.3
    cpe:2.3:a:matrix:synapse:1.92.3
  • Fedoraproject » Fedora » Version: 37
    cpe:2.3:o:fedoraproject:fedora:37
  • Fedoraproject » Fedora » Version: 38
    cpe:2.3:o:fedoraproject:fedora:38


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