Due to use of a dangling pointer, libcurl 7.29.0 through 7.71.1 can use the wrong connection when sending data.
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.debian.org/security/2021/dsa-4881
https://security.gentoo.org/glsa/202012-14
https://hackerone.com/reports/948876
https://curl.haxx.se/docs/CVE-2020-8231.html
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf