ALPINE-CVE-2026-9545
- Source
- https://security.alpinelinux.org/vuln/CVE-2026-9545
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2026-9545.json
- JSON Data
- https://api.osv.dev/v1/vulns/ALPINE-CVE-2026-9545
- Upstream
- Published
- 2026-07-03T07:16:25.807Z
- Modified
- 2026-07-07T10:30:04.662326278Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
- Summary
- [none]
- Details
-
In this scenario, libcurl first uses a proper HTTP/3 server for the initial transfers, and when it makes a second transfer to the same site it has been replaced by the attacker's impostor machine - without a valid certificate.
When libcurl returns to the hostname the second time with a cached SSL session (
CURLOPT_SSL_SESSIONID_CACHEis not disabled) and early data enabled (theCURLSSLOPT_EARLYDATAbit is set inCURLOPT_SSL_OPTIONS), libcurl might send off the second request's bytes on that new connection before enforcing the certificate verification failure. Potentially leaking sensitive information. - References