Vulnerability record/PUBLISHED/Published Mar 30, 2023 00:00:00 UTC
CVE-2023-27537
A double free vulnerability exists in libcurl <8.0.0 when sharing HSTS data between separate "handles". This sharing was introduced without considerations for do this sharing across separate threads but there was no indication of this fact in the documentation. Due to missing mutexes or thread locks, two threads sharing the same HSTS data could end up doing a double-free or use-after-free.
Base scoreN/A/ 10
SeverityNoneCVSS unscored
Exploitability / impact
CVSS metric breakdown
Base severityNone
No CVSS vector is available for this record.
CVSS communicates standardized severity and impact characteristics. It does not establish whether a system is exploitable in your specific environment.
Record context
CVE Numbering Authorityhackerone
Last updatedNov 2, 2026 22:32:10 UTC
PublishedMar 30, 2023 00:00:00 UTC
ReservedMar 2, 2023 00:00:00 UTC