A flaw was found in curl. When importing HTTP Strict Transport Security (HSTS) cache records, loading a parent domain entry configured to include subdomains before a longer-lived subdomain entry silently drops the subdomain policy. Consequently, once the parent policy expires, curl fails to upgrade subsequent connections for the subdomain to HTTPS and transmits unencrypted requests, allowing a network attacker to intercept sensitive data.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Ubuntu USN |
USN-8927-1 | curl vulnerabilities |
Ubuntu USN |
USN-8932-1 | curl vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Sat, 17 Oct 2026 00:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in curl. When importing HTTP Strict Transport Security (HSTS) cache records, loading a parent domain entry configured to include subdomains before a longer-lived subdomain entry silently drops the subdomain policy. Consequently, once the parent policy expires, curl fails to upgrade subsequent connections for the subdomain to HTTPS and transmits unencrypted requests, allowing a network attacker to intercept sensitive data. | |
| Title | curl: curl: HSTS cache import drops longer-lived child | |
| Weaknesses | CWE-201 | |
| References |
| |
| Metrics |
threat_severity
|
cvssV3_1
|
Projects
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OpenCVE Enrichment
Updated: 2026-10-17T02:00:07Z
Weaknesses
Ubuntu USN