04 min Developer Tools How-to Security curl 8.21.0 Fixes 25-Year-Old libcurl mTLS Bug curl 8.21.0 fixes 18 security flaws, including CVE-2026-8932, a 25-year-old libcurl mTLS connection-reuse bug. The practical risk is in applications that embed libcurl and change client certificate settings while reusing connection pools. AkshayJune 25, 2026 Read More