CVE-2023-27537
MEDIUM
MEDIUM
Priority: 0.11
BB Relevance:
62/100
Published: 2023-03-30
Modified: 2026-10-23
First seen: 2026-10-29
Status: active
Attack Surface
Network
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
None
UI:
None
S:
Unchanged
C:
None
I:
None
A:
High
Description
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.
Weakness Classification (1)
Affected Software (12)
| Vendor | Product | Version |
|---|---|---|
| broadcom | brocade_fabric_operating_system_firmware | - |
| haxx | libcurl | 7.88.0 |
| haxx | libcurl | 7.88.1 |
| netapp | active_iq_unified_manager | - |
| netapp | clustered_data_ontap | 9.0 |
| netapp | h300s_firmware | - |
| netapp | h410s_firmware | - |
| netapp | h500s_firmware | - |
| netapp | h700s_firmware | - |
| splunk | universal_forwarder | 8.2.0 – 8.2.12 |
| splunk | universal_forwarder | 9.0.0 – 9.0.6 |
| splunk | universal_forwarder | 9.1.0 |
References & Advisories (5)
Third Party Advisory
Third Party Advisory
Exploit
Third Party Advisory