CVE-2023-23915
curl: HSTS amnesia with --parallel
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · February 15, 2023
Updated · October 15, 2026
Description
A flaw was found in the Curl package, where the HSTS mechanism could fail when multiple transfers are done in parallel, as the HSTS cache file gets overwritten by the most recently completed transfer. This issue may result in limited confidentiality and integrity.
Statement
There is no HSTS support in the versions of curl shipped in rhel-7 and rhel-8. Curl packages as shipped in rhel-9 do not support HSTS.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
CVSS / CWE
CVSS 3.1 · 4.2CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE-319 · Cleartext Transmission of Sensitive Information