A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://hackerone.com/reports/1913733 Exploit, Patch, Third Party Advisory
- https://hackerone.com/reports/1913733 Exploit, Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · haxx, apple, netappNVD modified 2026-10-23 23:10
Affected (CPE criteria) 8
cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:*cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:ontap_antivirus_connector:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
References 18
- http://seclists.org/fulldisclosure/2023/Jul/47 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jul/48 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jul/52 Mailing List, Third Party Advisory
- https://hackerone.com/reports/1913733 Exploit, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202310-12 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230609-0009/ Third Party Advisory
- https://support.apple.com/kb/HT213843 Third Party Advisory
- https://support.apple.com/kb/HT213844 Third Party Advisory
- https://support.apple.com/kb/HT213845 Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jul/47 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jul/48 Mailing List, Third Party Advisory
- http://seclists.org/fulldisclosure/2023/Jul/52 Mailing List, Third Party Advisory
- https://hackerone.com/reports/1913733 Exploit, Patch, Third Party Advisory
- https://security.gentoo.org/glsa/202310-12 Third Party Advisory
- https://security.netapp.com/advisory/ntap-20230609-0009/ Third Party Advisory
- https://support.apple.com/kb/HT213843 Third Party Advisory
- https://support.apple.com/kb/HT213844 Third Party Advisory
- https://support.apple.com/kb/HT213845 Third Party Advisory