All vulnerabilities

Servers and applications

CVE-2021-22890

curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly "short-cut" the host handshake. When confusing the tickets, a…

Severity
Low 3.7
Published
1 Apr 2021
Last changed
14 Oct 2026
Added to UpHeron
21 Oct 2026
Sources
NVD

Affected software

SoftwareAffected versions
curlServers and applications · cpe:a:haxx:libcurl
  • From 7.63.0 up to 7.75.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-22890
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-22890