When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against proxyA using Digest auth, a subsequent transfer routed through proxyB erroneously leaks the Proxy-Authorization: header intended solely for proxyA.
7.81.0-1ubuntu1.258.5.0-2ubuntu10.108.14.1-2ubuntu1.48.18.0-1ubuntu2.27.35.0-1ubuntu2.20+esm207.47.0-1ubuntu2.19+esm167.58.0-2ubuntu3.24+esm97.68.0-1ubuntu2.25+esm4Exploitability
AV:NAC:LPR:NUI:NScope
S:UImpact
C:HI:HA:NCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N