VDB
JLSEC-2026-407
JLSEC-2026-407
PUBLISHED
CVSS 9.300000190734863 CRITICAL
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.
Risk Scores
CVSS 4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Julia | CURL_jll | 0 |
| Julia | LibCURL_jll | 0 |
Timeline
- May 4, 2026 CVE Published
- May 4, 2026 CVE Updated
References
- http://seclists.org/fulldisclosure/2023/Jul/47 url
- http://seclists.org/fulldisclosure/2023/Jul/48 url
- http://seclists.org/fulldisclosure/2023/Jul/52 url
- https://hackerone.com/reports/1913733 url
- https://security.gentoo.org/glsa/202310-12 url
- https://security.netapp.com/advisory/ntap-20230609-0009/ url
- https://support.apple.com/kb/HT213843 url
- https://support.apple.com/kb/HT213844 url
- https://support.apple.com/kb/HT213845 url